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For the Inventor, By the Inventor

Santa Rosa, CA, United States of America

National Controls Corporation

Calculating rank
USPTO Granted Patents = 21

Trademarks = 1

Forward Citations = 358

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20 inventors (with patents filed for the assignee):

goldMedal William A Joseph, Jr (6 out of 7 patents)

silverMedal Frank C Rock (5 out of 6 patents)

bronzeMedal David G Motkowski (3 out of 4 patents)

4.  Donald R Buttle (3 out of 4 patents)

5.  Ronald R Holt (3 out of 3 patents)

6.  Gustav Kuschewski (2 out of 3 patents)

7.  Darrell B Minton (2 out of 2 patents)

8.  David W Ek (2 out of 2 patents)

9.  Thomas Radford Sommer (1 out of 5 patents)

10.  George T Yu (1 out of 4 patents)

11.  Fred E Sells (1 out of 1 patent)

12.  Samuel D Taber (1 out of 1 patent)

13.  James H Coulter (1 out of 1 patent)

14.  Jeffery C Argentine (1 out of 1 patent)

15.  Willem Ebbinge (1 out of 1 patent)


21 patents:

1. 5662955 - Calibration method and apparatus for coffee grinder and brewer (1997-09-02),
2. 5660336 - Control apparatus and method for coffee grinder and brewer (1997-08-26),
3. 5417145 - Control apparatus and method for coffee grinder and brewer (1995-05-23),
4. 4660662 - Digital electronic scale with stabilized display (1987-04-28),
5. 4611677 - Shock proof scale (1986-09-16),
6. 4601004 - Microcomputer controlled cooking timer and method (1986-07-15),
7. D275105 - Control panel for frying computer (1984-08-14),
8. D275104 - Control panel for frying computer (1984-08-14),
9. 4237989 - Capacitive load cell and method of manufacture (1980-12-09),
10. 4179004 - Force multiplying load cell (1979-12-18),
11. 4139070 - Dual platform counting scale (1979-02-13),
12. 4138197 - Key actuator (1979-02-06),
13. D250883 - Scale base cabinet (1979-01-23),
14. 4129815 - Postal meter actuator (1978-12-12),
15. 4107985 - Load cell (1978-08-22),
Company Overview
National Controls Corporation, based in Santa Rosa, California, specializes in the design and manufacture of advanced control systems and components. The company focuses on providing innovative solutions for various industries, including automotive, aerospace, and industrial automation. With a commitment to quality and reliability, National Controls develops products that enhance operational efficiency and safety. Their expertise encompasses a range of technologies, ensuring they meet the evolving needs of their clients in a dynamic market.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

21 Patents

#10 in Santa Rosa, CA

#3,768 in California

#15,719 in US

#30,018 in the World

Santa Rosa, CA (US)
Santa Rosa, CA, United States of America

National Controls Corporation

Forward Citations = 358

20 inventors:

goldMedal William A Joseph, Jr (6 out of 7 patents)

silverMedal Frank C Rock (5 out of 6 patents)

bronzeMedal David G Motkowski (3 out of 4 patents)

4.  Donald R Buttle (3 out of 4 patents)

5.  Ronald R Holt (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: National Controls Corporation. Retrieved from https://idiyas.com/company/national-controls

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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