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Monterey, CA, United States of America

Sierra Instruments, Inc.

USPTO Granted Patents = 18

% Expired Patents = 22.2

Forward Citations = 848

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8 inventors (with patents filed for the assignee):

John George Olin (12 out of 12 patents)

David Michael Korpi (7 out of 10 patents)

John P Smitherman (3 out of 6 patents)

4. Virgil Alan Marple (1 out of 27 patents)

5. Brian Estep (1 out of 1 patent)

6. Gary A Russell (1 out of 2 patents)

7. Donald I Ross (1 out of 1 patent)

8. Norman C Ahlquist (1 out of 3 patents)

18 patents: Sort by Forward Citations

1. 10908005 - Capillary sensor tube flow meters and controllers (2021-02-02),

2. 9239257 - Mass flow meter configured with computational modeling for use with different fluids (2016-01-19),

3. 8925385 - Longitudinal resonating mode inertial mass sensing systems (2015-01-06),

4. 8563879 - Inertial microbalance filter assembly (2013-10-22),

5. 7748267 - Mass flow meter with solder/braze-flow secured spacer (2010-07-06),

6. 7197953 - Immersible thermal mass flow meter (2007-04-03),

7. 7178409 - Laminar flow meter or controller (2007-02-20),

8. 6971274 - Immersible thermal mass flow meter (2005-12-06),

9. 5880365 - Thermal mass flow sensor (1999-03-09),

10. 5879082 - Dual element temperature sensing probe using a mathematical model of (1999-03-09),

11. 5780736 - Axial thermal mass flowmeter (1998-07-14),

12. 5684246 - Method and apparatus for improved flow rate measurement and calibration (1997-11-04),

13. 5526674 - Method and apparatus for improved flow rate measurement and calibration (1996-06-18),

14. 4800754 - Wide-range, adjustable flowmeter (1989-01-31),

15. 4487062 - Mass flowmeter (1984-12-11),

Sierra Instruments, Inc. is a leading provider of flow measurement and control solutions, specializing in advanced technologies for various industries including water, gas, and process control. The company focuses on developing innovative flow meters and measurement devices that enhance efficiency and accuracy in fluid management. Headquartered in Monterey, California, Sierra Instruments is committed to delivering high-quality products and services that meet the evolving needs of its global customer base.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Sierra Instruments, Inc.

18 Patents

#3 in Monterey, CA

#4,278 in California

#17,933 in US

#34,146 in the World

Monterey, CA, United States of America

Sierra Instruments, Inc.

Forward Citations = 848

8 inventors:

John George Olin (12 out of 12 patents)

David Michael Korpi (7 out of 10 patents)

John P Smitherman (3 out of 6 patents)

4. Virgil Alan Marple (1 out of 27 patents)

5. Brian Estep (1 out of 1 patent)

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