Forward Citations = 273

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9 inventors (with patents filed for the assignee):

Richard K DeFreez (6 out of 15 patents)

Kenneth L Girvin (6 out of 16 patents)

Donald R Webster (3 out of 11 patents)

4. Mingguang Li (2 out of 2 patents)

5. Frederic C Schildmeyer (2 out of 5 patents)

6. James Brady (1 out of 3 patents)

7. Joel C Johnson (1 out of 8 patents)

8. Craig D Adams (1 out of 2 patents)

9. Herbert Goldsmith (1 out of 9 patents)

13 patents: Sort by Forward Citations

1. 6784990 - Particle detection system implemented with a mirrored optical system (2004-08-31),

2. 6498641 - Condensation nucleus counter with multi-directional fluid flow system (2002-12-24),

3. 6414754 - Method and apparatus for suppressing stray light in particle detectors (2002-07-02),

4. 6137572 - High sensitivity optical fluid-borne particle detection (2000-10-24),

5. 6111642 - Flow apertured intracavity laser particle detector (2000-08-29),

6. 6061132 - Dual detector array with noise cancellation for a particle size (2000-05-09),

7. 6031610 - Multi-lobe pump for particle counters (2000-02-29),

8. 6016194 - Particles counting apparatus and method having improved particle sizing (2000-01-18),

9. 5946092 - Dual laser heterodyne optical particle detection technique (1999-08-31),

10. 4487504 - Reflectance measuring instrument with integrating sphere (1984-12-11),

11. 4443108 - Optical analyzing instrument with equal wavelength increment indexing (1984-04-17),

12. 4422760 - Optical analyzing instrument having vibrating trough (1983-12-27),

13. 4400086 - Instrument for grinding and analyzing material in ground state (1983-08-23),

Company Overview

Pacific Scientific Instruments Company, based in Grants Pass, Oregon, specializes in the development and manufacturing of advanced instrumentation and measurement solutions. The company focuses on providing high-quality products for various applications, including environmental monitoring and industrial process control. With a commitment to innovation, Pacific Scientific Instruments leverages its expertise in sensor technology and data analysis to deliver reliable solutions that meet the evolving needs of its customers across diverse sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

13 Patents

#2 in Grants Pass, OR

#244 in Oregon

#23,854 in US

#45,081 in the World

Grants Pass, OR, United States of America

Pacific Scientific Instruments Company

Forward Citations = 273

9 inventors:

Richard K DeFreez (6 out of 15 patents)

Kenneth L Girvin (6 out of 16 patents)

Donald R Webster (3 out of 11 patents)

4. Mingguang Li (2 out of 2 patents)

5. Frederic C Schildmeyer (2 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pacific Scientific Instruments Company. Retrieved from https://idiyas.com/company/pacific-scientific-instruments-company

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]