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For the Inventor, By the Inventor

Yokohama, Japan

Masayoshi Shimamura

This inventor holds 36 USPTO granted patents and 10 EPO patents, primarily in Developer Carrying Member. Top assignees: Canon Kabushiki Kaisha, Kyodo Printing Co., Ltd.. Active years: 1989-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masayoshi Shimamura. Retrieved from https://idiyas.com/inventor/masayoshi-shimamura

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

USPTO Granted Patents = 36

% Patents Active = 61.1

 

Average Co-Inventor Count = 5.9

ph-index = 12

Forward Citations = 356(Granted Patents)


Location History:

  • Kamakura, JP (1992)
  • Kawasaki, JP (1994 - 1998)
  • Tokyo, JP (1989 - 2007)
  • Kanagawa, JP (1993 - 2010)
  • Yokohama, JP (1997 - 2015)

Company Filing History:

goldMedal31 out of 93,085 
 
Canon Kabushiki Kaisha
 patents
silverMedal5 out of 71 
 
Kyodo Printing Co., Ltd.
 patents

Years Active: 1989-2015

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Areas of Expertise:
Developer Carrying Member
Developing Apparatus
Magnetic Toner
Image Forming Method
Developing Assembly
Process Cartridge
Shielding Base Member
Color Filter
Electrophotographic
Method of Manufacturing
Positively Chargeable Toner
36 patents (USPTO):Explore Patents
1. 9026012 - Developer carrying member, process for its production, and developing assembly (2015-05-05),
2. 8792810 - Developer carrying member, process for its production, and developing assembly (2014-07-29),
3. 8628846 - Developer carrying member and developing unit (2014-01-14),
4. 8546051 - Developer bearing member and process for producing same, development apparatus and development method (2013-10-01),
5. 8538303 - Developer carrying member, method for its production, and developing assembly (2013-09-17),
6. 8377549 - Developer carrying member, and developing apparatus using same (2013-02-19),
7. 8372570 - Developer carrying member, method for manufacturing same and developing apparatus (2013-02-12),
8. 8298658 - Developer carrying member and developing assembly (2012-10-30),
9. 8295745 - Developer carrying member and developing assembly (2012-10-23),
10. 8059997 - Developer carrying member and developing apparatus (2011-11-15),
11. 7796926 - Developing apparatus and electrophotographic image-forming apparatus (2010-09-14),
12. 7727619 - Developer carrying member and developing apparatus (2010-06-01),
13. 7585606 - Developer carrying member and developing method by using thereof (2009-09-08),
14. 7364791 - Developer carrying member and developing method by using thereof (2008-04-29),
15. 7361442 - Developing method and developing assembly (2008-04-22),

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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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