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For the Inventor, By the Inventor

Toyohashi, Japan

Shinji Kubo

This inventor holds 15 USPTO granted patents, plus 2 CIPO patents. Top assignee: Mitsubishi Rayon Company, Limited. Active years: 1989-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shinji Kubo. Retrieved from https://idiyas.com/inventor/shinji-kubo

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

USPTO Granted Patents = 15

% Patents Active = 100.0

 

Average Co-Inventor Count = 4.9

ph-index = 6

Forward Citations = 167(Granted Patents)


Location History:

  • Nagoya, JP (1989 - 1993)
  • Toyohashi, JP (1991 - 2000)

Company Filing History:

goldMedal15 out of 1,357 
 
Mitsubishi Rayon Company, Limited
 patents

Years Active: 1989-2000

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15 patents (USPTO):Explore Patents
1. 6103438 - Polyester resin for toner, process for its production and toner (2000-08-15),
2. 5807654 - Polyester resin for toner, process for its production and toner (1998-09-15),
3. 5276127 - Polyester resin for toner (1994-01-04),
4. 5270436 - Polyester for electrophotography (1993-12-14),
5. 5227273 - Binder for toner and process for producing the same (1993-07-13),
6. 5204413 - Process fro producing resin for a toner (1993-04-20),
7. 5153301 - Polyester resin for toner (1992-10-06),
8. 5071918 - Process for producing resin for a toner (1991-12-10),
9. 5057596 - Crosslinked polyester resin from trihydric alcohol (1991-10-15),
10. 5024914 - Resin for toner particle (1991-06-18),
11. 5009978 - Preparation process for toner polymer (1991-04-23),
12. 4988794 - Polyester resin for toner and process for its production (1991-01-29),
13. 4980448 - Crosslinked polyester for toner and process for preparation thereof (1990-12-25),
14. 4866158 - Polyester resin for toner and process for its production (1989-09-12),
15. 4849495 - Polyester resin from tri- or higher polycarboxylic acid for toner and (1989-07-18),

Title: The Innovations of Shinji Kubo

Introduction

Shinji Kubo is a prominent inventor based in Toyohashi, Japan. He has made significant contributions to the field of materials science, particularly in the development of polyester resins for toner applications. With a total of 15 patents to his name, Kubo's work has had a substantial impact on the printing industry.

Latest Patents

One of Kubo's latest patents is focused on a polyester resin for toner, which includes a unique process for its production. This polyester resin comprises an acid component that contains aromatic dicarboxylic acids and their lower alkyl esters. Additionally, it features an alcohol component that includes bisphenol A derivative diols. Notably, the resin is designed to limit the content of aldehyde compounds and their by-products to no more than 200 ppm. This innovation results in toner polyester resins that do not emit irritating odors during production or copying processes. The toner produced provides clear images with reduced haziness and excellent color tone reproduction, ensuring high image precision.

Career Highlights

Shinji Kubo is currently employed at Mitsubishi Rayon Company, Limited, where he continues to advance his research and development efforts. His work has been instrumental in enhancing the quality and performance of toner products in the market.

Collaborations

Kubo has collaborated with notable colleagues, including Ryo Funato and Noriyuki Tajiri. Their combined expertise has contributed to the successful development of innovative materials and processes in the field.

Conclusion

Shinji Kubo's contributions to the field of polyester resins for toner applications exemplify the importance of innovation in materials science. His patents reflect a commitment to improving product quality and performance in the printing industry.

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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