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For the Inventor, By the Inventor

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):

goldMedal John George Olin (12 out of 12 patents)

silverMedal David Michael Korpi (7 out of 10 patents)

bronzeMedal 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:

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),
Company Overview
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 synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Sierra Instruments, Inc. USPTO Patent Assignee Logo
18 Patents

#3 in Monterey, CA

#4,293 in California

#17,974 in US

#34,244 in the World

Monterey, CA (US)
Monterey, CA, United States of America

Sierra Instruments, Inc.

Forward Citations = 848

8 inventors:

goldMedal John George Olin (12 out of 12 patents)

silverMedal David Michael Korpi (7 out of 10 patents)

bronzeMedal 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sierra Instruments, Inc.. Retrieved from https://idiyas.com/company/sierra-instruments

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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