For the Inventor, By the Inventor

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Boulder, CO, United States of America

Particle Measuring Systems, Inc.

USPTO Granted Patents = 94

EPO Patents = 14

Trademarks = 25

Forward Citations = 3,535

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73 inventors (with patents filed for the assignee):

Brian A Knollenberg (24 out of 22 patents)

Daniel Rodier (17 out of 15 patents)

Robert G Knollenberg (14 out of 15 patents)

4. Davide Recchia (11 out of 9 patents)

5. Dwight A Sehler (11 out of 11 patents)

6. Thomas A Bates (10 out of 10 patents)

7. Ronald W Adkins (10 out of 6 patents)

8. Todd A Cerni (8 out of 8 patents)

9. Matt Michaelis (7 out of 7 patents)

10. Brett Haley (7 out of 7 patents)

11. John R Mitchell (7 out of 7 patents)

12. Giovanni Scialo (7 out of 5 patents)

13. Cliff Ketcham (5 out of 9 patents)

14. James M Lumpkin (5 out of 5 patents)

15. Scott Waisanen (5 out of 5 patents)

Core Competencies:

Particle Detection

Robotic Control

Aerosol Measurement

Nanoparticle Detection

Cleanroom Environments

Optical Particle Analyzers

Fluid Manifold

Calibration Verification

Microbial Air Sampler

Particle Sampling

False Positive Reduction

Airflow Sensing

94 patents: Sort by Forward Citations

1. 12461010 - Systems and methods for reducing false positive particle detection events in a particle detector (2025-11-04),

2. 12422341 - Compact intelligent aerosol and fluid manifold (2025-09-23),

3. 12399114 - Modular particle counter with docking station (2025-08-26),

4. 12399102 - System and method for particles measurement (2025-08-26),

5. 12399089 - Liquid impinger sampling systems and methods (2025-08-26),

6. 12352671 - Particle sampling systems and methods for robotic controlled manufacturing barrier systems (2025-07-08),

7. 12326393 - Enhanced dual-pass and multi-pass particle detection (2025-06-10),

8. 12313514 - Detection scheme for particle size and concentration measurement (2025-05-27),

9. 12276592 - Particle detection via scattered light combined with incident light (2025-04-14),

10. 12270817 - Robotic control for aseptic processing (2025-04-08),

11. 12231890 - User access-restrictive systems and methods for operating particle sampling devices (2025-02-18),

12. 12130222 - Condensation particle counters and methods of use (2024-10-29),

13. 11988593 - Advanced systems and methods for interferometric particle detection and detection of particles having small size dimensions (2024-05-21),

14. 11946852 - Particle detection systems and methods for on-axis particle detection and/or differential detection (2024-04-02),

15. 11927509 - Particle sampling systems and methods for robotic controlled manufacturing barrier systems (2024-03-12),

Particle Measuring Systems, Inc. is a global leader in particle counting and microbial monitoring instruments, providing comprehensive solutions for cleanroom monitoring in various industries. With over 45 years of experience, the company offers innovative technologies that help ensure product quality and process efficiency. Their range of products includes airborne particle counters, liquid particle counters, microbial samplers, and data management software. Particle Measuring Systems, Inc. serves customers in pharmaceutical, semiconductor, aerospace, healthcare, and other critical environments where contamination control is paramount.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

94 Patents

#12 in Boulder, CO

#71 in Colorado

#3,839 in US

#7,951 in the World

Boulder, CO, United States of America

Particle Measuring Systems, Inc.

Forward Citations = 3,535

73 inventors:

Brian A Knollenberg (24 out of 22 patents)

Daniel Rodier (17 out of 15 patents)

Robert G Knollenberg (14 out of 15 patents)

4. Davide Recchia (11 out of 9 patents)

5. Dwight A Sehler (11 out of 11 patents)

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