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For the Inventor, By the Inventor

Kashiwa, Japan

Issei Shinmura

This inventor holds 10 USPTO granted patents and 1 published patent application and 4 EPO patents. Top assignee: Powdertech Co., Ltd.. Active years: 2003-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Issei Shinmura. Retrieved from https://idiyas.com/inventor/issei-shinmura

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

Calculating rank
USPTO Granted Patents = 10 

% Patents Active = 90.0

 

Average Co-Inventor Count = 2.8

ph-index = 3

Forward Citations = 16(Granted Patents)


Location History:

  • Kashiwa, JP (2003 - 2011)
  • Toride, JP (2011)
  • Ibaraki, JP (2011 - 2012)

Company Filing History:

goldMedal10 out of 94 
 
Powdertech Co., Ltd.
 patents

Years Active: 2003-2012

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10 patents (USPTO):Explore Patents
1. 8247148 - Resin-coated ferrite carrier for electrophotographic developer and electrophotographic developer using the resin-coated ferrite carrier (2012-08-21),
2. 7964330 - Electrophotographic resin-coated ferrite carrier, method for producing the same, and electrophotographic developer (2011-06-21),
3. 7897317 - Method for producing core material of electrophotographic ferrite carrier and resin-coated ferrite carrier (2011-03-01),
4. 7879522 - Carrier core material for electrophotographic developer, carrier and electrophotographic developer using the carrier (2011-02-01),
5. 7824833 - Resin-coated ferrite carrier for electrophotographic developer, its production method, and electrophotographic developer using the resin-coated ferrite carrier (2010-11-02),
6. 7553597 - Carrier core material, coated carrier, and two-component developing agent for electrophotography (2009-06-30),
7. 7442483 - Ferrite carrier for electrophotographic developer and method for preparing the same, and electrophotographic developer using the same (2008-10-28),
8. 7183033 - Carrier core material, coated carrier, two-component developing agent for electrophotography, and image forming method (2007-02-27),
9. 7144670 - Carrier for electrophotographic developer and process of producing the same (2006-12-05),
10. 6582870 - Carrier for electrophotographic developer and electrophotographic developer containing the same (2003-06-24),

Title: The Innovations of Issei Shinmura

Introduction

Issei Shinmura is a prominent inventor based in Kashiwa, Japan. He has made significant contributions to the field of electrophotographic developers, holding a total of 10 patents. His work focuses on enhancing the performance and efficiency of electrophotographic processes.

Latest Patents

Shinmura's latest patents include a resin-coated ferrite carrier for electrophotographic developers. This innovation features a ferrite carrier core material with a BET specific surface area ranging from 900 to 5,000 cm/g and an apparent density between 2.30 to 2.80 g/cm. Additionally, he has developed an electrophotographic resin-coated ferrite carrier, which has a carrier core coated with resin. The product of the apparent density, average particle size, and BET specific surface area of the carrier core must satisfy specific conditions to ensure optimal performance.

Career Highlights

Throughout his career, Shinmura has been associated with Powdertech Co., Ltd., where he has been instrumental in advancing the technology related to electrophotographic developers. His innovative approaches have led to significant improvements in the efficiency and quality of electrophotographic processes.

Collaborations

Shinmura has collaborated with notable colleagues such as Kanao Kayamoto and Yuji Sato. Their combined expertise has contributed to the successful development of various technologies in the field.

Conclusion

Issei Shinmura's contributions to the field of electrophotographic developers highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving the efficiency and effectiveness of electrophotographic processes.

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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