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Chicago, IL, United States of America

Stewart Warner Corporation

USPTO Granted Patents = 92

Trademarks = 1

Forward Citations = 1,354

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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. Mark C Kao (3 out of 4 patents)

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

15. Myron J Johnson (3 out of 3 patents)

Core Competencies:

Pressure Sender

Programmable Hour Meter

Pneumatic Motors

Illuminated Information Display

Dual Mode Grease Gun

Vehicle Speed Sensor

Automatic Lubrication Assembly

Indicating Gauge

Swivel Caster Assembly

Halogen Lamp Assembly

Sound Attenuator

Corrosion Resistant Caster

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 - Dec 9 2025

92 Patents

#63 in Chicago, IL

#232 in Illinois

#3,915 in US

#8,094 in the World

Chicago, IL, United States of America

Stewart Warner Corporation

Forward Citations = 1,354

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)

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