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Toledo, OH, United States of America

Eltra Corporation

USPTO Granted Patents = 82

Trademarks = 16

Forward Citations = 964

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86 inventors (with patents filed for the assignee):

William J Roberts (5 out of 10 patents)

Walter I Hansen (5 out of 8 patents)

Calvin V Kern (5 out of 6 patents)

4. Jeffrey T Major (4 out of 8 patents)

5. Richard W Mattson (4 out of 7 patents)

6. Henry E Jensen (3 out of 4 patents)

7. Carl K Dudley (3 out of 4 patents)

8. John P Badger (2 out of 4 patents)

9. Gary E Lang (2 out of 5 patents)

10. Andrew T Tershak (2 out of 2 patents)

11. Norman F Sieja (2 out of 3 patents)

12. Herbert Klepper (2 out of 2 patents)

13. Roger J Lang (2 out of 5 patents)

14. Elwin J Brayley (2 out of 2 patents)

15. Raymond D Miele, Jr (2 out of 2 patents)

Core Competencies:

Electronic Ignition

Spark Advance

Battery Management

Dynamoelectric Machine

Hydraulic Cylinder

Optical System

Pressure Gauge

Refractory Compositions

Throttle Control

Character Generation

Sports Shoe

Multi-Conductor Cable

82 patents: Sort by Forward Citations

1. 4718330 - Hydraulic cylinder (1988-01-12),

2. 4371833 - Speed switch (1983-02-01),

3. 4369666 - Starter drive assembly (1983-01-25),

4. 4368717 - Automatic shut-off circuit for electronic ignition system (1983-01-18),

5. 4359597 - Twisted pair multi-conductor ribbon cable with intermittent straight (1982-11-16),

6. 4359508 - Lead-acid storage battery (1982-11-16),

7. 4354466 - Idle speed controller (1982-10-19),

8. 4348840 - Modular hazardous dust collection pan and walkway (1982-09-14),

9. 4347819 - Ignition spark advance using a constant peak to peak amplitude timing (1982-09-07),

10. 4347455 - Removable brush holder with brush clamping device (1982-08-31),

11. 4346377 - Method and apparatus for encoding and generating characters in a display (1982-08-24),

12. 4345553 - Multiple step advance with magnetic trigger rotor (1982-08-24),

13. 4345245 - Method and apparatus for arranging segmented character groups in a (1982-08-17),

14. 4344008 - Brush spring tension adjustment for dynamoelectric machine (1982-08-10),

15. 4343153 - Anti-supercharge pressure valve (1982-08-10),

Eltra Corporation, based in Toledo, OH, specializes in the development and manufacturing of advanced ignition systems. The company focuses on core technologies such as electronic ignition, spark advance mechanisms, and battery management systems. Eltra's expertise extends to dynamoelectric machines, hydraulic cylinders, optical systems, and pressure gauges, as well as refractory compositions. With a commitment to innovation, Eltra plays a significant role in enhancing the efficiency and reliability of ignition technologies across various applications.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

82 Patents

#14 in Toledo, OH

#208 in Ohio

#4,522 in US

#9,246 in the World

Toledo, OH, United States of America

Eltra Corporation

Forward Citations = 964

86 inventors:

William J Roberts (5 out of 10 patents)

Walter I Hansen (5 out of 8 patents)

Calvin V Kern (5 out of 6 patents)

4. Jeffrey T Major (4 out of 8 patents)

5. Richard W Mattson (4 out of 7 patents)

Please report any incorrect information to [email protected]

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