% Expired Patents = 50.0

CIPO Patents = 1

EPO Patents = 3

Forward Citations = 9

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11 inventors (with patents filed for the assignee):

Shigeru Oyama (2 out of 2 patents)

Ichiro Fujii (1 out of 1 patent)

Yuji Murata (1 out of 1 patent)

4. Seiji Ueda (1 out of 1 patent)

5. Shigeo Negishi (1 out of 2 patents)

6. Toshiharu Taguchi (1 out of 1 patent)

7. Masashi Sakamoto (1 out of 18 patents)

8. Takaharu Yasue (1 out of 5 patents)

9. Takeharu Tajima (1 out of 1 patent)

10. Nobuo Kusamoto (1 out of 1 patent)

11. Masahiro Sano (1 out of 5 patents)

12. Tetsuo Miyayama (0 patent)

13. Ryousei Takigaura (0 patent)

14. Shuichi Murakami (0 patent)

15. Masahiro c/o Idemitsu Technofine Co Ltd Sano (0 patent)

4 patents: Sort by Forward Citations

1. 8389125 - Formaldehyde scavenger and wood material using same (2013-03-05),

2. 7910500 - Fiber treatment agent, fiber treated with such fiber treatment agent, fiber fabric, laminate and method for treating fiber (2011-03-22),

3. 7888430 - Modified powder, fluid composition containing said modified powder, formed article, and method for producing modified powder (2011-02-15),

4. 7767297 - Fiber, fiber assembly, and fiber producing method (2010-08-03),

Company Overview

Idemitsu Technofine Co., Ltd. is a leading chemical company specializing in the production of high-quality chemicals for various industries. With a strong focus on research and development, they are committed to providing innovative solutions to meet the evolving needs of their customers. Their wide range of products includes functional materials, fine chemicals, and performance chemicals, all of which are manufactured to the highest standards of quality and reliability.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#3,058 in Tokyo

#7,588 in Japan

Tokyo, Japan

Idemitsu Technofine Co., Ltd.

Forward Citations = 9

11 inventors:

Shigeru Oyama (2 out of 2 patents)

Ichiro Fujii (1 out of 1 patent)

Yuji Murata (1 out of 1 patent)

4. Seiji Ueda (1 out of 1 patent)

5. Shigeo Negishi (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Idemitsu Technofine Co., Ltd.. Retrieved from https://idiyas.com/company/idemitsu-technofine-company

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

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]

1 patent (CIPO):

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]

3 patents (EPO):

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]