For the Inventor, By the Inventor

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Oakland, CA, United States of America

Hound Labs, Inc.

USPTO Granted Patents = 27

% Expired Patents = 3.7

Trademarks = 8

Forward Citations = 208

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20 inventors (with patents filed for the assignee):

Michael Scott Lynn (22 out of 22 patents)

Kevin M Limtao (10 out of 12 patents)

Peter Holst (7 out of 11 patents)

4. Hamilton Roger Tang (6 out of 9 patents)

5. Joseph A Heanue (6 out of 49 patents)

6. Seong-Kun Oh (6 out of 6 patents)

7. Jeffrey A Schuster (6 out of 43 patents)

8. Kate LeeAnn Bechtel (5 out of 95 patents)

9. Samartha G Anekal (5 out of 5 patents)

10. Kevin Bradford Dunk (5 out of 5 patents)

11. Michael J Gordon (5 out of 5 patents)

12. Louis Chin Jones (5 out of 5 patents)

13. Jeffrey A Stoll (4 out of 4 patents)

14. Jacob A Wolf (3 out of 13 patents)

15. Michael V D'Ambrosio (3 out of 4 patents)

27 patents: Sort by Forward Citations

1. 12392769 - Ambient contamination in breath analyte detection and measurement (2025-08-19),

2. 11977086 - Biomarker detection from breath samples (2024-05-07),

3. 11933731 - Systems and methods using Surface-Enhanced Raman Spectroscopy for detecting tetrahydrocannabinol (2024-03-19),

4. 11890090 - Rotary valve assemblies and methods of use for breath sample cartridge systems (2024-02-06),

5. 11874286 - System and method for target substance identification (2024-01-16),

6. 11821821 - Noninvasive point of care biomarker detection from breath samples (2023-11-21),

7. 11806711 - Systems, devices, and methods for fluidic processing of biological or chemical samples using flexible fluidic circuits (2023-11-07),

8. 11747353 - Analyte detection from breath samples (2023-09-05),

9. 11709170 - Device and method for detecting multiple target substances of abuse (2023-07-25),

10. 11703517 - Method and apparatus for determining sample processes for detecting analysis substances (2023-07-18),

11. 11703516 - Method and apparatus for detecting target substances using gradient determination (2023-07-18),

12. 11703515 - Method and apparatus for detecting target substances using detection routines (2023-07-18),

13. 11533392 - Solid-state illumination system for compact microscopy (2022-12-20),

14. 11426097 - Rotary valve assemblies and methods of use for breath sample cartridge systems (2022-08-30),

15. 11187711 - Analyte detection from breath samples (2021-11-30),

Hound Labs, Inc. is a technology company focused on developing scientific solutions to detect drugs and alcohol in breath, offering a portable testing device for law enforcement, employers, and healthcare professionals. Their flagship product, the Hound® marijuana breathalyzer, enables rapid and accurate measurements of THC levels in breath, providing a valuable tool for cannabis impairment testing.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Hound Labs, Inc.

27 Patents

#14 in Oakland, CA

#2,931 in California

#12,405 in US

#23,968 in the World

Oakland, CA, United States of America

Hound Labs, Inc.

Forward Citations = 208

20 inventors:

Michael Scott Lynn (22 out of 22 patents)

Kevin M Limtao (10 out of 12 patents)

Peter Holst (7 out of 11 patents)

4. Hamilton Roger Tang (6 out of 9 patents)

5. Joseph A Heanue (6 out of 49 patents)

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