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For the Inventor, By the Inventor

Nagaokakyo, Japan

Isao Kohmura

This inventor holds 11 USPTO granted patents. Top assignee: Mitsubishi Paper Mills Limited. Active years: 1976-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Isao Kohmura. Retrieved from https://idiyas.com/inventor/isao-kohmura

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 2.5

ph-index = 6

Forward Citations = 126(Granted Patents)


Location History:

  • Kyoto, JA (1976)
  • Nagaokakyo, JA (1976 - 1977)
  • Nagaokakyo, JP (1981 - 1991)

Company Filing History:

goldMedal11 out of 622 
 
Mitsubishi Paper Mills Limited
 patents

Years Active: 1976-1991

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11 patents (USPTO):Explore Patents
1. 5060024 - Method and apparatus for cleaning squeeze rollers in liquid (1991-10-22),
2. 4892812 - Silver halide photosensitive materials (1990-01-09),
3. 4879197 - Method of developing electronic photograph with liquid developer and (1989-11-07),
4. 4562140 - Photosensitive material for use in diffusion transfer process with (1985-12-31),
5. 4345019 - Diffusion transfer process (1982-08-17),
6. 4302526 - Materials for silver complex diffusion transfer process (1981-11-24),
7. 4032690 - Thermosensitive recording material (1977-06-28),
8. 4020232 - Heat-sensitive recording sheets (1977-04-26),
9. 3984605 - Heat sensitive recording material containing decolorizing agent (1976-10-05),
10. 3937864 - Heat-sensitive recording sheets having improved stability (1976-02-10),
11. 3936309 - Heat-sensitive recording composition and sheet (1976-02-03),

Title: The Innovative Contributions of Isao Kohmura

Introduction

Isao Kohmura is a prominent inventor based in Nagaokakyo, Japan. He has made significant contributions to the field of electrophotographic technology and photosensitive materials. With a total of 11 patents to his name, Kohmura's work has had a lasting impact on the industry.

Latest Patents

One of Kohmura's latest patents is a method and apparatus for cleaning squeeze rollers in liquid electrophotographic developing apparatus. This invention provides a method for cleaning squeeze rollers using a cleaning pad, which allows for the development of an electrophotographic photoreceptor without causing stains. The method involves supplying a solvent for the liquid developer to a pair of squeeze rollers, isolating the rollers from each other, and allowing one roller to contact the cleaning pad for effective cleaning. Additionally, he has developed a silver halide photosensitive material designed for use under room light. This material includes a spectrally unsensitized negative silver halide with specific grain sizes and an organic desensitizer, meeting various requirements for enhanced performance.

Career Highlights

Kohmura is associated with Mitsubishi Paper Mills Limited, where he has been able to apply his innovative ideas and research. His work has contributed to advancements in the field of imaging and printing technologies, showcasing his expertise and dedication to innovation.

Collaborations

Throughout his career, Kohmura has collaborated with notable colleagues, including Kiyoshi Futaki and Yukio Tahara. These collaborations have further enriched his research and development efforts, leading to groundbreaking inventions.

Conclusion

Isao Kohmura's contributions to the field of electrophotographic technology and photosensitive materials highlight his innovative spirit and commitment to advancing technology. His patents reflect a deep understanding of the complexities involved in imaging processes, making him a significant figure in his field.

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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