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For the Inventor, By the Inventor

Saitama, Japan

Shinji Amaya

This inventor holds 8 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignee: Dainippon Ink and Chemicals, Incorporated. Active years: 1990-2010.

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

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

USPTO Granted Patents = 8 

% Patents Active = 87.5

 

Average Co-Inventor Count = 3.8

ph-index = 5

Forward Citations = 89(Granted Patents)


Location History:

  • Urawa, JP (2002)
  • Saitama, JP (1990 - 2010)

Company Filing History:

goldMedal8 out of 630 
 
Dainippon Ink and Chemicals, Incorporated
 patents

Years Active: 1990-2010

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8 patents (USPTO):Explore Patents
1. 7732114 - Modified nigrosine, its production method, and toner for developing electrostatic charge images using this modified nigrosine (2010-06-08),
2. 6653040 - Electrophotographic carrier, developer using the same, and developing method (2003-11-25),
3. 6455218 - Developer for electrostatic image development and image forming method using the same (2002-09-24),
4. 6335139 - Toner for electrostatic image development and image forming method employing the same (2002-01-01),
5. 5302631 - Ink for jet printer (1994-04-12),
6. 5262264 - Combination of color toners for developing electrostatic latent image (1993-11-16),
7. 5017450 - Color toner composition for electrostatic developer (1991-05-21),
8. 4931370 - Color toner composition for developing electrostatic images (1990-06-05),

Title: Innovations by Shinji Amaya

Introduction

Shinji Amaya is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of electrostatics and toner development, holding a total of 8 patents. His work focuses on improving the properties and production methods of modified nigrosine and related technologies.

Latest Patents

Amaya's latest patents include a modified nigrosine and its production method, which offers satisfactory dispersibility in resin while reducing the residual aniline amount. This innovation also includes a toner for developing electrostatic charge images that utilizes the modified nigrosine colorant. The toner resolves issues such as fogging and scattering within the developing apparatus, while maintaining consistent image density. Additionally, he has developed an electrophotographic carrier and a developer that enhances the charging rate of toner, ensuring high-quality printing without chemical fogging.

Career Highlights

Throughout his career, Shinji Amaya has worked with prominent companies such as Dainippon Ink and Chemicals, Incorporated and Dic Corporation. His expertise in the field has led to advancements in toner technology and electrophotography.

Collaborations

Amaya has collaborated with notable colleagues, including Toshiro Kogawara and Seiichi Shimizu, contributing to the development of innovative solutions in his field.

Conclusion

Shinji Amaya's contributions to the field of electrostatics and toner development have made a significant impact on the industry. His innovative patents and collaborations highlight his dedication to advancing technology in this area.

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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