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Physics Expert Witnesses

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Howard J. Cohen, PhD
President
3272 Cowper Street
Palo Alto CA 94306-3004
USA
phone: 650-856-8123
fax: 650-856-4273
Howard J. Cohen, PhD, has over 30 years of experience in Software Engineering, Architecture and Implementation. He possesses particular expertise in Algorithms, Relational Databases, Graphical User Interfaces (GUIs) and Software Applications in general. His experience has been in a broad spectrum of technology, in several languages, in a wide variety of applications, and on multiple platforms. Dr. Cohen's background includes Electronic Design Automation, Bioinformatics, Digital Cartography, Banking Systems for Foreign Exchange Traders, and many more. He is the co-inventor on approximately 120 patents.

Dr. Cohen has over 15 years of experience as an Expert Witness. He possesses excellent written and verbal communications skills, including the ability to express himself well in interpersonal contacts, make presentations to large audiences, explain complex concepts clearly, and write well on levels ranging from the scientific to end user documentation. He is available to analyze complex systems, to write clearly about technical issues, and communicate face-to-face in a manner appropriate for any audience to understand the issues, the technology and the point of view. Dr. Cohen has been deposed and testified at arbitration hearings and in Federal Court.

Expert Witness Projects Include:
  • Trade Secrets
  • Copyright
  • DMCA - Digital Millennium Copyright Act
  • Patent Infringement
  • Source Code Analysis
  • Business Practices
  • Damages Analysis
  • Computer Software Security / Forensics
View Consulting Profile.
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Dr. David Eimerl, PhD
107 Siebe Drive
Fairfield CA 94534-1523
USA
phone: 707-416-0376 or 925-413-0777 (cell)
fax: 925-605-1739
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Laser Injury Expert

Dr. David Eimerl, PhD is a Physicist, Computer Scientist, and Engineer with over 25 years of experience in Lasers and Applications of Light, and particularly in the Effect of Lasers on Human Tissue. A former chief scientist of the laser program at the Lawrence Livermore National Laboratory, he is experienced in applications of Lasers in Medicine,Wafer Processing and Telecommunications. He has over 30 years experience in high performance computers and modeling.

Dr. Eimerl blends a unique background in laser science, laser applications and the legal process. His Expert Witness services include cases involving Laser Injury and Patent Protection.

Expertise:
  • Laser Injury
  • Laser Science and Optical Technology
  • Laser Systems
  • Laser-Materials Interactions
  • Lasers in Medicine and Dentistry
  • Applications to Wafer Processing, Wafer Inspection, Telcom Amplifiers, and Telcom Sources
  • Computer Simulation and Modeling
Expert Witness Services:
  • Laser Injury
  • Intellectual Property Protection
  • Patent Infringement
  • Patent Prosecution
  • Depositions & Interrogatories
  • Expert Testimony & Reports
  • Demonstrative Evidence
View Consulting Profile.
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David W. Riley
President, PhD and Physical Organic Chemistry
858 Princeton Ct.
Branchburg NJ 08853
USA
phone: 908-369-7260
fax: 908-369-7260
Dr. David W. Riley is an Extrusion Analysis & Plastics Rheological Consultant. Dr. Riley has spent over nineteen years as a consultant in the field of Plastic Processing. He has over forty years of experience in developing Polymer Defect Technology and fifteen years in developing the field of Plastic and Polymer coefficient of friction related to the feed section of the extruder.

Areas of Expertise:
  • Expert Witness
  • Analytical Instrumentation Adaptation to Processing Equipment
  • Friction Analysis
  • Melt Rheology
  • Extrusion Equipment: Design & Analysis of Production
  • Telecommunication Cables and Insulation
  • Power Cables and Testing XLDPE
  • All phases of PVC Compounding & Extrusion
  • Thermal Stability of Polymers
  • Surface Chemistry, Metals & Polymers
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Gary E. Kilpatrick, PE, DFE
President and Chief Engineering Officer
3397 Cherrybrook Drive
Jamestown NC 27282
USA
phone: 336-841-6354 (Office) 336-803-1639 (Cell)
fax: 336-841-6375
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Who is Kilpatrick Forensics?

Kilpatrick Forensics is a forensic engineering firm that provides forensic engineering services for our legal and insurance clients. Mr. Kilpatrick travels throughout the United States in order to investigate motor vehicle crashes and product defects and failure claims resulting in personal injury or death. Mr. Kilpatrick is a board certified vehicle crash reconstruction engineer through the National Academy of Forensic Engineers (NAFE) and is a Diplomat Forensic Engineer (DFE). He is also a part-time instructor for Northwestern University through their Center For Public Safety and is a firm believer in continuing education.

The Mission of Kilpatrick Forensics:

Mr. Kilpatrick’s mission is to provide to you forensic engineering services that are dedicated to the application of the art, science and methodology of engineering and the scientific method in order to answer questions of fact in the jurisprudence system to assist the trier of fact concerning motor vehicle accidents and motor vehicle product defect and failure claims. Mr. Kilpatrick utilizes his engineering knowledge, skill, experience, training and education to give you an objective professional opinion that is thorough and comprehensive, understandable and timely. He has submitted written expert reports in state and federal court and has given sworn expert testimony under oath during both deposition and trial.

What services does Kilpatrick Forensics provide? (also see the following pages)
  • At-Scene Investigation and Evidence Mapping
  • Motor Vehicle Crash Reconstruction
  • Vehicle Crash Testing
  • Vehicle Skid Testing
  • Image, Store and Analyze a Vehicle’s Crash Data Report (CDR) stored in the EPROM circuitry of a Vehicle’s Airbag Control Module (ACM)
  • Photogrammetry Studies of Police Photographs
  • Airbag and Seat Belt Inspections
  • School Bus Crash Reconstruction
  • Tractor Trailer/Heavy Trucks Crash Reconstruction
  • Motorcycle Crash Reconstruction
  • ATV and ROHV Crash Reconstruction
  • Computer Based Dynamic Motor Vehicle Crash Simulations Videos
  • Standards of Care for Motor Vehicles
  • SAE Standards
  • National Highway Traffic and Safety Administration (NHTSA) Regulations
  • Federal Motor Vehicle Safety Regulations
  • Product Defect and Failure Analyses
  • Machine Design and Analyses
  • Computer Aided Design (CAD)
Who are the clients of Kilpatrick Forensics?

Mr. Kilpatrick works with law firms, public defenders and insurance companies on civil plaintiff, civil defendant, criminal and insurance claimant cases.

How can you contact Kilpatrick Forensics?

Mr. Kilpatrick’s corporate office is located in Jamestown North Carolina. Visit our website at www.kilpatrickforensics.com. Please feel free to contact him any time at office at 336-841-6354 or cell phone at 336-803-1639.
During 1990, the Specialty Vehicle Institute of America (SVIA) with the assistance of the American National Standards Institute (ANSI) published the first standard for ATVs referred to as ANSI/SVIA-1-1990. During 2001, ANSI/SVIA revised this standard referred to as standard ANSI/SVIA 1-2001. The standard was revised again during 2007 and again in 2010 and is referred to as standard ANSI/SVIA 1-2010.

A Traffic Accident Reconstruction is a process by which an engineer determines from all available information and evidence how and why a traffic accident occurred including but not limited to pre-impact and post impact vehicular velocity vectors, pre-impact and post impact vehicular direction vectors, vehicular change in velocity (Delta-V), momentum vectors, vehicles' point of impact on the roadway, vehicular visibility by a driver, vehicular crash data retrieval reports if assessable, accident factors and causes.

7/8/2011 · Engineering
Quality control starts at the point of product conception and is carried all the way through to the final design and manufacture of a product.

Some motor vehicle accidents take place during the night time hours when natural sun light is not present.

When we drive our vehicles down the road, we are driving them at a certain velocity and direction. All vehicles have weight and mass to the order of a few hundred pounds for a motorcycle, a few thousand pounds for a large SUV or luxury car or several tons for a tractor-trailer truck. When our vehicles move at speed down the road, they create energy by virtue of their mass and forward velocity

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Michael S. Gossman, MS, DABR, FAAPM
Chief Medical Physicist & RSO
Regulation Directive Medical Physics
104 Hildeen Court
Russell KY 41169
USA
phone: 606-232-9283 (cell)
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COMPANY DESCRIPTION:
  • Expert Witness - Medical malpractice, misadministration, medical event (Radiation Oncology, Radiology, Nuclear Medicine)
  • Expert Witness - Radiation exposure, radiation dose, radioactivity and radiobiological calculations
  • Expert Witness – Patent infringement (intellectual property all categories)
  • Expert Witness – Medical physics, supervision of (medical physicist, dosimetrist, radiation therapist, radiologic technologist)
  • Expert Witness - Termination of employment
Michael Gossman Medical Physicist Expert PhotoMichael S. Gossman, M.S., DABR, FAAPM, is a Board Certified Qualified Expert Medical Physicist, an honorary Fellow of the American Association of Physicists in Medicine (AAPM), and currently the Chief Medical Physicist & Radiation Safety Officer (RSO) in Radiation Oncology at Tri-State Regional Cancer Center in Ashland, KY.

Chief Gossman is extra-professionally an Accreditation Site Reviewer for the American College of Radiation Oncology (ACRO) and the American College of Radiology (ACR), was a 2-term Ohio River Valley Chapter President of the AAPM, and formerly a Graduate School Professor of Clinical Medical Physics at Wright State University. He is the highest ranking scientist in medicine and has been in the field for 17 years.

Chief Gossman's expertise involves the safe, effective and precise delivery of radiation to achieve the therapeutic result prescribed in patient care by radiation oncologists striving to treat cancer patients with particle accelerators and radioactive material. Extra-professionally, he is retired as the Interim Editor-in-Chief and Editorial Board Member for the Medical Dosimetry Journal, Editorial Board Member for the Journal of Applied Clinical Medical Physics, and served four years as a Medical Consultant to the U.S. Nuclear Regulatory Commission.

Chief Gossman is directly and ultimately responsible for all technical and scientific aspects of cancer treatment. He directly supervises and oversees efforts from staff medical physicists, dosimetrists, radiation therapists and x-ray technologists. As an expert in radiation detector measurements, particle accelerator and radioactive material calibrations, and radioactive material handling, Mr. Gossman is a highly respected medical physicist by medical physicists nationally. He is also the owner of the Radiation Oncology Medical Physics consulting company Regulation Directive Medical Physics, LLC and employed extraprofessionally as a Senior Managing Scientist at Exponent, Inc. for medical device testing and expert witness efforts.

Services Provided:
  • Medical expert witness
  • Medical consultant
  • Legal consultant
  • Review of: medical event, malpractice, and misadministration
  • Regulatory compliance
  • Investigation and audits
  • Independent medical evaluation of the probable deterministic effects of radiation exposures
  • Facility practice vs. standards review
  • Accreditation preparation
  • Shielding calculations
  • Accelerator acceptance testing & commissioning
  • Quality assurance
  • Peer review of the Chief Medical Physicist
  • Radiation measurements
  • Radiation calculations
  • Radiation safety
  • Dose determination
  • Calibration of medical accelerators
  • Treatment planning
  • Calculation of time and dose for treatment
  • Handling, shipping, receiving, and storing radioactive material
  • Calibrating radioactive material
  • Regulatory compliance
  • Interpretation of bioassay results and other data related to radiation exposure
  • Calculation of internal and external radiation doses, as necessary
Regulation Directive Medical Physics
104 Hildeen Court
Russell, Kentucky, 41169
Telephone: 606-232-9283
Website: http://www.rdmpllc.com
Tri-State Regional Cancer Center
Department of Radiation Oncology
706 23rd Street
Ashland, KY 41101
Telephone: 606-232-9283
8/6/2013 · Medical
Cochlear implants, via direct electrical stimulation of the auditory nerve, allow the restoration of hearing and speech recognition in both adults and children having sensorineural deafness. These devices typically contain both extemal components (speech processor, microphone, transmitter) and intemal components (including the cochlear stimulator and electrode array), which are surgically placed under the skin behind the ear and in the cochlea.

7/18/2013 · Radiology
Inadequate research exists regarding testing of a ventricular assist device (VAD) for susceptibility to radiation damage. Specifically, minimal data are available to radiation oncologists prescribing treatment plans for patients with an implanted VAD. As the number of implanted devices increases, patients requiring radiation at tissue sites near or at the device will increase.

6/28/2013 · Medical
Improved outcomes and quality of life of heart failure patients have been reported with the use of left ventricular assist devices (LVADs).

1/8/2013 · Radiology
New research shows the effects of electron beams on implanted vascular access ports composed of plastic, determining how they impair the fluence of radiation around them.

10/23/2012 · Radiology
Abstract. Object: Where no society-based or manufacturer guidance on radiation limits to neuromodulation devices is available, this research provides the groundwork for neurosurgeons and radiation oncologists who rely on the computerized treatment plan clinically for cancer patients.

7/25/2012 · Medical Physics
Abstract-The medical community is advocating for progressive improvement in the design of implantable cardioverter-defibrillators and implantable pacemakers to accommodate elevations in dose limitation criteria.

5/14/2012 · Radiology
Since the first commercial multichannel cochlear implant was marketed by Cochlear in 1985 (1), use of the device has grown exponentially. As of mid-2010, more than 188,000 people worldwide have received a cochlear implant system (2). Recent developments in the manufacturing of cochlear implants by the market leader, Cochlear Limited (based in Australia), have resulted in an aim to provide electronically stable models (3).

3/13/2012 · Medical Physics
We detail, derive and correct the technical use of the solid angle variable identified in formal guidance that relates skyshine calculations to dose-equivalent rate.

12/5/2011 · Radiology
Abstract -- In order to determine a mouse's dose accurately and prior to engaging in live mouse radiobiological research, a tissue-equivalent tumor-bearing phantom mouse was constructed and bored to accommodate detectors. Comparisons were made among four different types of radiation detectors, each inserted into the mouse phantom for radiation measurement under a 6 MV linear accelerator beam.

9/9/2011 · Radiology
Skyshine radiation emanating from medical accelerator facilities is a phenomenon not well understood.

7/22/2011 · Medical Physics
In the process of radiation oncology department accreditation, surveyors pay close attention to continuous quality improvement in the clinical section.

1/3/2010 · Medical Physics
As promulgated by the Nuclear Regulatory Commission, packaging regulations for radioactive material are confusing (e.g., “activity” vs “contained” activity vs “total” activity). As a consequence, medical physicists are forced to secondguess the intent of the regulations.

1/2/2010 · Medical Physics
Recent improvements to the functionality and stability of implantable pacemakers and cardioverter-defibrillators involve changes that include efficient battery power consumption and radiation hardened electrical circuits. Manufacturers have also pursued MRI-compatibility for these devices

12/31/2009 · Medical Physics
Vascular access ports are used widely in the administering of drugs for radiation oncology patients. Their dosimetric effect on radiation therapy delivery in photon beams has not been rigorously established. In this work, the effects on external beam fields when any of a variety of vascular access ports were included in the path of a high energy beam are studied. This study specifically identifies sidescatter and backscatter consequences as well as attenuation effects.

Edited by Oliver Vonend & Siegfried Eckert
Michael Gossman is the author of Chapter 9: Clinical Concerns For and Strategies With Pacemakers in Radiation Oncology
Authors: Todd Pawlicki, et al; Editors; Michael Gossman (Ch. 19), et al
This comprehensive work highlights benefits of quality techniques, approaches to implementation, and guidelines for specific quality assurance steps related to equipment and procedures used in radiotherapy. After an overview of manufacturing and engineering techniques, the text addresses quality and safety issues in radiotherapy from both the physician and physicist viewpoints.
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Time-Variable Systems, LLC
Jamie Chapman, PhD
Renewable Energy Systems Consultant
500th Throckmorton St.
Fortworth TX 76102
USA
phone: 617-513-8429

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Jamie Chapman, PhD, provides more than 35 years of broad technical, engineering, operational and economic expertise in the areas of Renewable Energy and Power Conversion Systems.

Dr. Chapman's experience includes research and development focused on the technologies needed to maintain leadership for the next, next generation of multi-megawatt wind turbine power plants, including turbulence detection by lidar and radar. His work in this area generated four patent disclosures.

From 2004-2010, Dr. Chapman served as Associate Director of the Wind Science and Engineering Research Center at Texas Tech University. As part of the Senior Research Faculty, he was a principal in achieving $10 million in external funding to implement a wind energy research and education program. Dr. Chapman delivered a graduate-level course on wind turbine design, control, grid interface and economics and initiated Texas Tech's program on the integration of wind turbines with desalination systems.

Dr. Chapman has provided national and international Expert Witness services in Patent, System Performance, Manufacturing Defects, and other litigation areas. In addition to his very broad technical background, Dr. Chapman is an excellent communicator, orally and in writing, of sophisticated and complex technological concepts.

Currently the principal at Time-Variable Systems LLC, Texas and New York, Dr. Chapman's focus and areas of expertise include:
  • Innovative Electric Machines
  • Variable Speed Electric Generators
  • Marine Hydrokinetic Power Conversion Systems
  • Radar Sensing
  • Megawatt-scale Power Processing and Control via Power Electronics
  • Wind Turbines
  • Energy Storage
  • Rotary and Linear Electric Machines
  • Electronic Power Conversion
  • Control and Grid Interface
View Dr. Chapman's Consulting Profile.