logo

For the Inventor, By the Inventor

Tokyo, Japan

Katutoshi Endo

This inventor holds 5 USPTO granted patents. Top assignees: Ricoh Company, Ltd., Stanley Electric Co., Ltd. Active years: 1976-1979.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katutoshi Endo. Retrieved from https://idiyas.com/inventor/katutoshi-endo

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

Calculating rank
USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 4

Forward Citations = 41(Granted Patents)


Location History:

  • Yokohama, JA (1977)
  • Tokyo, JA (1976 - 1978)
  • Tokyo, JP (1979)

Company Filing History:

goldMedal5 out of 28,957 
 
Ricoh Company, Ltd.
 patents
silverMedal1 out of 1,445 
 
Stanley Electric Co., Ltd
 patents
where one patent can have more than one assignee

Years Active: 1976-1979

Loading Chart...
5 patents (USPTO):Explore Patents
1. 4139380 - Electrophotographic sensitive material with rubber interlayer (1979-02-13),
2. 4134763 - Selenium-base photosensitive materials for electrophotography having (1979-01-16),
3. 4091145 - Support for electrophotographic sensitive plate (1978-05-23),
4. 4045217 - Developing process for electrophotography (1977-08-30),
5. 3990907 - Method of removing vacuum evaporated selenium photoresponsive layer from (1976-11-09),

Title: Katutoshi Endo: Innovator in Electrophotography

Introduction

Katutoshi Endo is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of electrophotography, holding a total of 5 patents. His work focuses on developing advanced photosensitive materials that enhance the quality and efficiency of electrophotographic processes.

Latest Patents

One of his latest patents is for an electrophotographic sensitive material with a rubber interlayer. This innovative photosensitive material comprises a support, a photoconductive layer, and an adhesive layer primarily made of chloroprene rubber and/or nitrile rubber. This design ensures excellent adhesion between the support and the photoconductive layer, providing flexibility and clarity in copied images. Another notable patent involves selenium-based photosensitive materials for electrophotography, where a photoconductive layer made of selenium is formed on a substrate with a roughened surface achieved through a super-finish method.

Career Highlights

Throughout his career, Katutoshi Endo has worked with reputable companies such as Ricoh Company, Ltd. and Stanley Electric Co., Ltd. His experience in these organizations has allowed him to refine his expertise in the development of innovative materials for electrophotography.

Collaborations

He has collaborated with notable coworkers, including Itaru Fujimura and Makoto Ohira, contributing to advancements in their shared field of expertise.

Conclusion

Katutoshi Endo's contributions to electrophotography through his patents and collaborations highlight his role as a key innovator in this technology. His work continues to influence the industry and improve the quality of electrophotographic materials.

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]
Loading…