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For the Inventor, By the Inventor

Gloucester, MA, United States of America

Edmund M Passmore

This inventor holds 10 USPTO granted patents. Top assignees: Gte Products Corporation, Gte Sylvania Incorporated. Active years: 1977-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Edmund M Passmore. Retrieved from https://idiyas.com/inventor/edmund-m-passmore

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 1.7

ph-index = 4

Forward Citations = 44(Granted Patents)


Location History:

  • Wilmington, MA (US) (1977)
  • Gloucester, MA (US) (1980 - 1992)

Company Filing History:

goldMedal8 out of 1,770 
 
Gte Products Corporation
 patents
silverMedal2 out of 605 
 
Gte Sylvania Incorporated
 patents

Years Active: 1977-1992

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10 patents (USPTO):Explore Patents
1. 5159229 - Metal halide lamp having CO in gas fill (1992-10-27),
2. 5041041 - Method of fabricating a composite lamp filament (1991-08-20),
3. 5021703 - Metal halide lamp (1991-06-04),
4. 4950954 - Metal halide discharge lamp with electrodes having unequal thoria (1990-08-21),
5. 4881009 - Electrode for high intensity discharge lamps (1989-11-14),
6. 4859239 - Tungsten electrode and method of producing same (1989-08-22),
7. 4822312 - Electrode for high intensity discharge lamps (1989-04-18),
8. 4233536 - Incandescent lamp getter (1980-11-11),
9. 4020383 - Method of pulsing incandescent lamp filaments (1977-04-26),
10. 4012659 - Method of flashing tungsten filament (1977-03-15),

Title: The Innovative Contributions of Edmund M Passmore

Introduction

Edmund M Passmore is a notable inventor based in Gloucester, MA (US), recognized for his significant contributions to the field of lighting technology. With a total of 10 patents to his name, Passmore has developed innovative solutions that enhance the performance and efficiency of various lighting systems.

Latest Patents

One of his latest patents is for a metal halide lamp that incorporates carbon monoxide in the gas fill. This invention aims to improve lumen maintenance in high-intensity discharge lamps. The design features an outer sealed glass envelope, a pair of electrical conductors, and an arc tube containing a chemical fill of mercury, metal halide additives, carbon monoxide, and a starting gas. Another notable patent involves a method of fabricating a composite lamp filament. This invention presents a tungsten-based duplex composite member that combines the desirable qualities of an inner tungsten core with the resistance to attack provided by an outer tungsten-based material.

Career Highlights

Throughout his career, Passmore has worked with prominent companies such as GTE Products Corporation and GTE Sylvania Incorporated. His work in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in lighting technology.

Collaborations

Passmore has collaborated with several professionals in his field, including William M Labadini and Warren Anderson. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.

Conclusion

Edmund M Passmore's contributions to the field of lighting technology through his patents and collaborations highlight his role as an influential inventor. His innovative solutions continue to impact the industry positively.

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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