Takashi Ueyama

This inventor holds 8 USPTO granted patents. Top assignees: Sekisui Chemical Co., Ltd., Sekisui Kagaku Kogyo Kabushiki Kaisha. Active years: 1995-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Ueyama. Retrieved from https://idiyas.com/inventor/takashi-ueyama

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 = 100.0

Average Co-Inventor Count = 2.8

ph-index = 2

Forward Citations = 17(Granted Patents)

Location History:

Shiga, JP (1995)
Kusatsu, JP (1996 - 2000)
Shiga-Ken, JP (1998 - 2001)

Company Filing History:

7 out of 882

Sekisui Chemical Co., Ltd.

patents

1 out of 232

Sekisui Kagaku Kogyo Kabushiki Kaisha

patents

Years Active: 1995-2001

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6190816 - Toner resin composition and toner (2001-02-20),

2. 6106988 - Toner resin composition and toner prepared therefrom (2000-08-22),

3. 5849848 - Toner resin composition and a method of manufacturing it as well as a (1998-12-15),

4. 5718999 - Toner copolymer binder (1998-02-17),

5. 5658991 - Toner resin composition and a method of manufacturing it, as well as a (1997-08-19),

6. 5597674 - Toner resin composition and toner (1997-01-28),

7. 5547798 - Toner composition and toner with low and high M.W. vinyl polymers (1996-08-20),

8. 5422217 - Resin composition for toner, method of preparing the same and toner (1995-06-06),

Title: The Innovations of Takashi Ueyama

Introduction

Takashi Ueyama is a notable inventor based in Kusatsu, Japan. He has made significant contributions to the field of toner resin compositions, holding a total of 8 patents. His work has focused on improving the quality and performance of toner products used in printing technologies.

Latest Patents

Ueyama's latest patents include innovative developments in toner resin compositions. One of his key inventions is a toner resin composition that exhibits excellent fixability, offset resistance, and storage stability. This invention aims to reduce the occurrence of DF staining, which is a common issue in printing. The toner resin composition consists of a vinyl copolymer and an ethylene-based olefin polymer, both of which contribute to its enhanced performance characteristics.

Career Highlights

Throughout his career, Takashi Ueyama has worked with prominent companies in the chemical and materials industry. He has been associated with Sekisui Chemical Co., Ltd. and Sekisui Kagaku Kogyo Kabushiki Kaisha, where he has contributed to various innovative projects. His expertise in polymer chemistry has played a crucial role in the development of advanced toner products.

Collaborations

Ueyama has collaborated with several talented individuals in his field. Notable coworkers include Tatsuo Suzuki and Masazumi Okudo, who have worked alongside him on various projects related to toner technology.

Conclusion

Takashi Ueyama's contributions to the field of toner resin compositions highlight his innovative spirit and dedication to improving printing technologies. His patents reflect a commitment to excellence and a desire to solve common challenges in the 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]