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Chicago, IL, United States of America

Stewart Warner Corporation

USPTO Granted Patents = 92

Trademarks = 1

Forward Citations = 1,369

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62 inventors (with patents filed for the assignee):

William R Mayer (11 out of 12 patents)

Frank J Fontana (7 out of 8 patents)

Howard J Rasmussen (7 out of 9 patents)

4. Jerry D Shew (6 out of 6 patents)

5. Francis E Ferrari (5 out of 5 patents)

6. Frans Brouwer (5 out of 15 patents)

7. Gregory E Slobodzian (5 out of 5 patents)

8. Renzo N Rutili (4 out of 5 patents)

9. Robert A Payne (4 out of 4 patents)

10. John D Baker (4 out of 4 patents)

11. Ronald J Hickman (4 out of 4 patents)

12. Alton E Runions (4 out of 4 patents)

13. Frank C Weaver (3 out of 5 patents)

14. Mark C Kao (3 out of 4 patents)

15. Vernon N Tramontini (3 out of 3 patents)

Core Competencies:

Pressure Sender

Pneumatic Motors

Lubrication Assembly

Air Core Gauge

Tachometer Kit

Illuminated Display

Dual Wheel Caster

Grease Gun

Speed Sensor

Pattern Tracer

Cruise Control Switch

Timing Meter

92 patents: Sort by Forward Citations

1. 4947150 - Pressure sender (1990-08-07),

2. 4941136 - Programmable hour meter for recording elapsed operation time (1990-07-10),

3. 4908806 - Directional spring for AC synchronous motor (1990-03-13),

4. 4870891 - Pneumatically controlled air motor (1989-10-03),

5. 4807090 - Instrument illumination system (1989-02-21),

6. 4793022 - Tread protector for dual wheel caster (1988-12-27),

7. 4768300 - Illuminated information display (1988-09-06),

8. 4758784 - Air core gauge with zero pointer return related application (1988-07-19),

9. 4756230 - Sound attenuator for pneumatic motors (1988-07-12),

10. D296300 - Dual wheel caster (1988-06-21),

11. D295599 - Dual mode grease gun (1988-05-10),

12. 4732361 - High pressure lubricant control valve with self-cleaning restrictor (1988-03-22),

13. 4732221 - Pneumatic chipping hammer and method of manufacture (1988-03-22),

14. 4732034 - Tachometer kit with alternator pick up (1988-03-22),

15. 4728039 - Paint spray gun nozzle assembly (1988-03-01),

Stewart Warner Corporation is a leading manufacturer and supplier of innovative electronic and mechanical solutions for various industries. With a rich history spanning over 100 years, we have established ourselves as a trusted provider of high-quality products. Our diverse range of offerings includes gauges, sensors, instrument clusters, and electronic controls. We strive to deliver reliable and accurate solutions that meet the evolving needs of our customers, ensuring their success in a competitive market. Visit our website to explore our products and learn more about how we can help you solve your business challenges.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

Stewart Warner Corporation

92 Patents

#68 in Chicago, IL

#230 in Illinois

#4,064 in US

#8,344 in the World

Chicago, IL, United States of America

Stewart Warner Corporation

Forward Citations = 1,369

62 inventors:

William R Mayer (11 out of 12 patents)

Frank J Fontana (7 out of 8 patents)

Howard J Rasmussen (7 out of 9 patents)

4. Jerry D Shew (6 out of 6 patents)

5. Francis E Ferrari (5 out of 5 patents)

Please report any incorrect information to [email protected]

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