For the Inventor, By the Inventor

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Billerica, MA, United States of America

Passport Systems, Inc.

Calculating rank

USPTO Granted Patents = 31

% Expired Patents = 80.6

CIPO Patents = 1

EPO Patents = 8

Forward Citations = 201

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17 inventors (with patents filed for the assignee):

Robert J Ledoux (27 out of 30 patents)

William Bertozzi (26 out of 29 patents)

Stephen E Korbly (7 out of 7 patents)

4. Daniel A Cooper (3 out of 4 patents)

5. James B Costales (3 out of 4 patents)

6. Krzysztof E Kamieniecki (3 out of 3 patents)

7. Jeffrey K Thompson (3 out of 3 patents)

8. Alexei V Klimenko (3 out of 6 patents)

9. William Park, Jr (2 out of 5 patents)

10. Michael Donovan (2 out of 2 patents)

11. Norman B Brooks (2 out of 5 patents)

12. Michael M Olmstead (2 out of 2 patents)

13. Carol Johnstone (1 out of 4 patents)

14. Cody M Wilson (1 out of 1 patent)

15. Daniel L Higgs (1 out of 1 patent)

Core Competencies:

Nuclear Materials

Radiation Detectors

Neutron Activation

Photon Sources

Material Identification

Nuclear Resonance Fluorescence

Particle Acceleration

Adaptive Scanning

Cargo Inspection

Diagnostic Methods

X-Ray Energy Filtering

Tomography

31 patents: Sort by Forward Citations

1. 10942292 - Non-intrusive method to identify presence of nuclear materials using energetic prompt neutrons from photon-induced fission (2021-03-09),

2. 10579747 - Injection of simulated sources in a system of networked sensors (2020-03-03),

3. 10212231 - Methods and systems for detecting a material source using a server and networked sensors (2019-02-19),

4. 10132943 - Spectral segmentation for optimized sensitivity and computation in advanced radiation detectors (2018-11-20),

5. 9678024 - Methods and systems for non-intrusive chemical assaying of hydrogenous materials and mixtures using combined neutron activation and nuclear resonance fluorescence (2017-06-13),

6. 8886495 - Diagnostic methods and apparatus for an accelerator using induction to generate an electric field with a localized curl (2014-11-11),

7. 8867687 - Non-intrusive method to identify presence of nuclear materials using energetic prompt neutrons from neutron-induced fission (2014-10-21),

8. 8836249 - Methods and systems for confining charged particles to a compact orbit during acceleration using a non-scaling fixed field alternating gradient magnetic field (2014-09-16),

9. 8718219 - Non-intrusive method to identify presence of nuclear materials using energetic prompt neutrons from photon-induced fission (2014-05-06),

10. 8411822 - Methods and systems for determining the average atomic number and mass of materials (2013-04-02),

11. 8358730 - Non-intrusive method to identify presence of nuclear materials using energetic prompt neutrons from neutron-induced fission (2013-01-22),

12. 8340251 - Thin walled tube radiator for bremsstrahlung at high electron beam intensities (2012-12-25),

13. 8280684 - Diagnostic methods and apparatus for an accelerator using induction to generate an electric field with a localized curl (2012-10-02),

14. 8264173 - Methods and systems for accelerating particles using induction to generate an electric field with a localized curl (2012-09-11),

15. 8259900 - Adaptive scanning of materials using nuclear resonance fluorescence imaging (2012-09-04),

Company Overview

Passport Systems, Inc. is a technology company based in Billerica, MA, specializing in advanced detection and imaging solutions. The organization focuses on developing innovative systems for security and safety applications, particularly in the fields of radiation detection and imaging technologies. By leveraging cutting-edge research, Passport Systems aims to enhance capabilities in various sectors, including national security and environmental monitoring, contributing to safer communities and improved public health.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

31 Patents

#27 in Billerica, MA

#653 in Massachusetts

#10,959 in US

#21,334 in the World

Billerica, MA, United States of America

Passport Systems, Inc.

Forward Citations = 201

17 inventors:

Robert J Ledoux (27 out of 30 patents)

William Bertozzi (26 out of 29 patents)

Stephen E Korbly (7 out of 7 patents)

4. Daniel A Cooper (3 out of 4 patents)

5. James B Costales (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Passport Systems, Inc.. Retrieved from https://idiyas.com/company/passport-systems

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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