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For the Inventor, By the Inventor

Rochester, IN, United States of America

Thomas C Marrs

USPTO Granted Patents = 15


Average Co-Inventor Count = 1.6

ph-index = 4

Forward Citations = 50(Granted Patents)


Location History:

  • N. Manchester, IN (US) (1987)
  • Rochester, IN (US) (2000 - 2022)

Company Filing History:

goldMedal10 out of 11 
 
Marshall Electric Corp.
 patents
silverMedal1 out of 1 
 
Marrs; Thomas C.
 patent
bronzeMedal3 out of 832,843 
Other
 patents
where one patent can have more than one assignee

Years Active: 1987-2025

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15 patents (USPTO):Explore Patents
1. 12494622 - Ignition system using push-pull transformer (2025-12-09),
2. 11380479 - High voltage ignition coil with improved insulating characteristics (2022-07-05),
3. 10385819 - Multi-strike ignition system for an internal combustion engine (2019-08-20),
4. 10107251 - Ignition coil having a winding form (2018-10-23),
5. 10082123 - Electronic spark timing control system for an AC ignition system (2018-09-25),
6. 10066593 - Electronic spark timing control system for an AC ignition system (2018-09-04),
7. 10050418 - Ignition coil for passing alternating current to a spark plug (2018-08-14),
8. 10008830 - High-voltage extender for connecting a spark plug to a high-voltage source (2018-06-26),
9. 9923300 - Semi-rigid high-voltage extender (2018-03-20),
10. 9784232 - Forced frequency ignition system for an internal combustion engine (2017-10-10),
11. 7594489 - High voltage extender (2009-09-29),
12. 6328025 - Ignition coil with driver (2001-12-11),
13. 6135099 - Ignition system for an internal combustion engine (2000-10-24),
14. 6112730 - Ignition system with clamping circuit for use in an internal combustion (2000-09-05),
15. 4684912 - Winding form for high voltage transformer (1987-08-04),

Title: **Thomas C. Marrs: Innovator in Ignition System Technology**

Introduction

Thomas C. Marrs, a prolific inventor based in Rochester, Indiana, is recognized for his significant contributions to ignition system technologies. With a total of 14 patents to his name, Marrs has demonstrated a commitment to innovation within the automotive and electrical sectors, enhancing the efficiency and reliability of ignition systems.

Latest Patents

Marrs' latest patents include groundbreaking inventions that have transformed ignition technology. One notable invention is the **High Voltage Ignition Coil with Improved Insulating Characteristics**, featuring a ferromagnetic core surrounded by primary and secondary coils. This design improves the coil’s performance by utilizing a non-ferrous metal form between the secondary coil and the core, thus enhancing insulation and overall efficiency.

Another significant patent is the **Multi-Strike Ignition System for Internal Combustion Engines**. This system incorporates a power source, transformer, and multi-strike circuit that allows for multiple ignition strikes, improving performance and timing in internal combustion engines. The design includes a boost circuit that efficiently harnesses energy and a delay circuit ensuring precise timing for ignition events.

Career Highlights

Throughout his career, Thomas C. Marrs has worked with various companies, including Marshall Electric Corporation, where he has had a profound impact on developing innovative electrical engineering solutions. His experiences and expertise have allowed him to remain at the forefront of ignition system advancements.

Collaborations

Marrs has collaborated with talented engineers and inventors such as Stephen P. Barlow and Donald Recupido. Their teamwork has led to innovative breakthroughs in ignition technologies that have advanced the industry and enhanced engine performance.

Conclusion

Thomas C. Marrs continues to be a vital figure in the domain of ignition systems, driving innovations that shape the future of automotive technology. His impressive portfolio of patents showcases not only his technical expertise but also his dedication to improving ignition systems for better performance and reliability.

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