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Takuma Co., Ltd.

USPTO Granted Patents = 22

% Expired Patents = 31.8

EPO Patents = 3

Trademarks = 1

Forward Citations = 202

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51 inventors (with patents filed for the assignee):

Goro Fujiwara (6 out of 8 patents)

Mitsunobu Masuda (6 out of 8 patents)

Masayuki Kumada (4 out of 4 patents)

4. Keiji Mukai (4 out of 4 patents)

5. Shinichi Kunisaki (4 out of 6 patents)

6. Nobuya Matsumoto (3 out of 9 patents)

7. Mitsuaki Harada (3 out of 3 patents)

8. Hiroki Fujihira (2 out of 2 patents)

9. Shizuo Kataoka (2 out of 2 patents)

10. Yasuhiro Morimura (2 out of 36 patents)

11. Masatoshi Katayama (2 out of 2 patents)

12. Masaru Kanazawa (2 out of 2 patents)

13. Takeshi Morimoto (1 out of 24 patents)

14. Takeshi Saeki (1 out of 7 patents)

15. Masanori Shiraishi (1 out of 2 patents)

22 patents: Sort by Forward Citations

1. 7485163 - Nozzle and filter-type dust collector (2009-02-03),

2. 7211409 - Standard compound for immunoassay for dioxin and method of immunoassay for dioxin (2007-05-01),

3. 7166440 - 2,4,5-trichlorophenoxyalkyl carboxylic acid and a method for determining dioxins using the same (2007-01-23),

4. 6841138 - Method and device for temperature reduction of exhaust gas by making use of thermal water (2005-01-11),

5. 6733735 - Method and device for temperature reduction of exhaust gas by making use of thermal water (2004-05-11),

6. 6712343 - Method and device for temperature reduction of exhaust gas by making use of thermal water (2004-03-30),

7. 6619939 - Rotary pump (2003-09-16),

8. 6523811 - Method and device for temperature reduction of exhaust gas by making use of thermal water (2003-02-25),

9. 6523357 - Absorption refrigerator (2003-02-25),

10. 6460338 - Absorption waste-heat recovery system (2002-10-08),

11. 5876489 - Germ-removing filter and apparatus for maintaining sterile room under (1999-03-02),

12. 5856250 - Ionic substance removing material for use in super-clean room (1999-01-05),

13. 5531908 - Germ-free liquid dispenser (1996-07-02),

14. 5496860 - Antibacterial fiber, textile and water-treating element using the fiber (1996-03-05),

15. 5366619 - Germfree drinking water dispenser (1994-11-22),

Company Overview

Takuma Co., Ltd., based in Osaka, Japan, specializes in the development and manufacturing of advanced environmental technologies. The company focuses on solutions for waste treatment, recycling, and energy recovery, contributing to sustainable practices in various industries. Takuma is recognized for its innovative approaches in the field of waste management and resource recovery, aiming to enhance environmental conservation and promote a circular economy. Its expertise extends across multiple sectors, including industrial and municipal applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

22 Patents

#299 in Osaka

#2,795 in Japan

#28,807 in the World

Takuma Co., Ltd.

Forward Citations = 202

51 inventors:

Goro Fujiwara (6 out of 8 patents)

Mitsunobu Masuda (6 out of 8 patents)

Masayuki Kumada (4 out of 4 patents)

4. Keiji Mukai (4 out of 4 patents)

5. Shinichi Kunisaki (4 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Takuma Co., Ltd.. Retrieved from https://idiyas.com/company/takuma-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]

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