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North Adams, MA, United States of America

Sprague Electric Company

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USPTO Granted Patents = 292

Trademarks = 2

Forward Citations = 4,759

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185 inventors (with patents filed for the assignee):

Sidney D Ross (31 out of 31 patents)

Galeb H Maher (17 out of 25 patents)

Walter J Bernard (17 out of 19 patents)

4. Manuel Finkelstein (16 out of 16 patents)

5. Walter S Gontowski, Jr (14 out of 31 patents)

6. John P Maher (10 out of 10 patents)

7. Franz S Dunkl (10 out of 10 patents)

8. Ian Burn (9 out of 9 patents)

9. Clinton E Hutchins (8 out of 8 patents)

10. George A Shirn (8 out of 8 patents)

11. Jacob K Higgs (8 out of 9 patents)

12. Oliver L Richards, Jr (6 out of 9 patents)

13. James H Coleman (6 out of 6 patents)

14. John J Randall, Jr (6 out of 6 patents)

15. Didier Gouvernelle (5 out of 5 patents)

Core Competencies:

Solid Electrolyte Capacitor

Metallized Film Capacitor

Ceramic Capacitor

Hall Sensor

Integrated Circuit

Bipolar CMOS IC

Electrolytic Capacitor

Capacitor Process

Voltage Regulator

Dual Trigger Hall Effect

Noise Blanking System

Memory Device

292 patents: Sort by Forward Citations

1. 5223002 - Method of making polyaniline solid electrolyte capacitor (1993-06-29),

2. 5099397 - Fuzed solid electrolyte capacitor (1992-03-24),

3. 5057973 - Solid electrolyte capacitor with integral stamped fuze (1991-10-15),

4. 5053927 - Molded fuzed solid electrolyte capacitor (1991-10-01),

5. 5019418 - Metallized film capacitor process (1991-05-28),

6. 5011067 - Method for attaching a fuse wire to a lead frame (1991-04-30),

7. 5006964 - Low resistivity low ESR capacitor electrolyte (1991-04-09),

8. 5001757 - FM stereo tone detector (1991-03-19),

9. 5001073 - Method for making bipolar/CMOS IC with isolated vertical PNP (1991-03-19),

10. 4989119 - Solid electrolyte capacitor with testable fuze (1991-01-29),

11. 4987519 - Hermetically sealed aluminum electrolytic capacitor (1991-01-22),

12. 4987518 - Metal-cased electrolytic capacitor (1991-01-22),

13. 4982155 - Hall sensor with high pass hall voltage filter (1991-01-01),

14. 4935698 - Sensor having dual Hall IC, pole piece and magnet (1990-06-19),

15. 4931901 - Method for adjusting capacitor at manufacture and product (1990-06-05),

Company Overview

Sprague Electric Company, based in North Adams, MA, specializes in the development and manufacturing of advanced capacitor technologies. The company focuses on solid electrolyte capacitors, metallized film capacitors, and ceramic capacitors, catering to a diverse range of applications in electronics. Additionally, Sprague is involved in the production of Hall sensors, integrated circuits, and bipolar CMOS ICs, contributing to innovations in various sectors. With a commitment to quality and performance, Sprague Electric continues to be a key player in the capacitor industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

292 Patents

#1 in North Adams, MA

#88 in Massachusetts

#1,511 in US

#3,060 in the World

North Adams, MA, United States of America

Sprague Electric Company

Forward Citations = 4,759

185 inventors:

Sidney D Ross (31 out of 31 patents)

Galeb H Maher (17 out of 25 patents)

Walter J Bernard (17 out of 19 patents)

4. Manuel Finkelstein (16 out of 16 patents)

5. Walter S Gontowski, Jr (14 out of 31 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sprague Electric Company. Retrieved from https://idiyas.com/company/sprague-electric-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]

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