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For the Inventor, By the Inventor

Harleysville, PA, United States of America

John Harold Evans

This inventor holds 4 USPTO granted patents. Top assignees: Ici Americas, Inc., Ici United States Inc.. Active years: 1976-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John Harold Evans. Retrieved from https://idiyas.com/inventor/john-harold-evans

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 4

Forward Citations = 70(Granted Patents)


Location History:

  • Lansdale, PA (US) (1976 - 1985)
  • Harleysville, PA (US) (1997)
  • Landsdale, PA (US) (1997)

Company Filing History:

goldMedal3 out of 432 
 
Ici Americas, Inc.
 patents
silverMedal1 out of 38 
 
Ici United States Inc.
 patents

Years Active: 1976-1997

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4 patents (USPTO):Explore Patents
1. 5672843 - Single charge pyrotechnic (1997-09-30),
2. 5639986 - Airbag igniter and method of manufacture (1997-06-17),
3. 4527481 - Impact sensitive high temperature detonator (1985-07-09),
4. 3999484 - Delay device having dimpled transfer disc (1976-12-28),

Title: The Innovative Mind of John Harold Evans

Introduction

John Harold Evans, hailing from Harleysville, Pennsylvania, has made significant contributions to the field of pyrotechnics and automotive safety through his inventive spirit. With a total of four patents to his name, Evans has proven to be a pivotal figure in the development of advanced igniter systems for airbags.

Latest Patents

Among his noteworthy inventions, the "Single Charge Pyrotechnic" stands out. This innovative material consists of a metal fuel, an oxidizer, and a secondary fuel, allowing precise control over the reaction rate. This composition is particularly significant as it serves as a single charge igniter in automotive airbag systems, replacing the traditional separate ignition and enhancer charges. Another significant patent is the "Airbag Igniter and Method of Manufacture." This invention presents an enhanced igniter for airbags that integrates seamlessly with the airbag assembly, establishing metal-to-metal communication to improve efficiency and reliability.

Career Highlights

John Harold Evans has offered his expertise to prominent companies in the industry, including ICI Americas, Inc. and ICI United States Inc. Throughout his career, he has focused on developing technologies that enhance safety in automotive systems, particularly regarding airbag functionality. His innovative designs are a testament to his dedication to improving vehicle safety standards.

Collaborations

During his career, Evans has collaborated with several talented professionals, including Michael Albert Lehmicke and Kenneth T Sabotta. These partnerships highlight the collaborative spirit that often drives innovation, bringing together diverse skills and ideas to forge impactful inventions.

Conclusion

John Harold Evans exemplifies the spirit of innovation within the automotive sector. His patents not only advance the technology behind airbag systems but also contribute to the overall enhancement of safety measures in vehicles. Through his work, Evans continues to leave a lasting impact on the industry, paving the way for future innovations in automotive safety technology.

Profile summary based on public USPTO records.
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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