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For the Inventor, By the Inventor

Shizuoka, Japan

Toyo Roki Seizo Kabushiki Kaisha


USPTO Granted Patents = 41

Forward Citations = 557

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61 inventors (with patents filed for the assignee):

goldMedal Takenori Suzuki (6 out of 7 patents)

silverMedal Takashi Sakagami (6 out of 6 patents)

bronzeMedal Kouichi Ikuma (6 out of 6 patents)

4.  Hiroshi Morikawa (6 out of 6 patents)

5.  Hiroyasu Ohsawa (5 out of 5 patents)

6.  Soichi Uemura (4 out of 4 patents)

7.  Kazuya Matsuura (4 out of 5 patents)

8.  Atsushi Suzuki (4 out of 4 patents)

9.  Hideo Watanabe (3 out of 217 patents)

10.  Hayato Suzuki (3 out of 3 patents)

11.  Koji Suzuki (3 out of 5 patents)

12.  Tadayuki Onoda (3 out of 3 patents)

13.  Masatoshi Murakoshi (3 out of 3 patents)

14.  Hiroaki Mihara (3 out of 9 patents)

15.  Shinichiro Takemoto (2 out of 18 patents)


Core Competencies:
Fuel Cap
Vaporized Fuel Adsorption
Air Cleaner
Ion Exchange Filter
Hinge Mechanism
Intake Manifold
Oil Filter
Air Intake Device
Fuel Treating Canister
Filter Apparatus
Multi-Layer Filter Medium
Resin Composition

41 patents:

1. 8038027 - Fuel cap and vaporized fuel adsorption canister used in the fuel cap (2011-10-18),
2. 7879124 - Air cleaner and method of manufacturing the same (2011-02-01),
3. 7834078 - Fiber-reinforced resin composition for parts of air intake system of internal combustion engine (2010-11-16),
4. 7780770 - Air cleaner (2010-08-24),
5. 7699912 - Air-cleaner (2010-04-20),
6. 7670411 - Air-cleaner (2010-03-02),
7. 7635427 - Ion exchange filter (2009-12-22),
8. 7607198 - Hinge mechanism for air cleaner (2009-10-27),
9. 7584931 - Case holding mechanism (2009-09-08),
10. 7510087 - Case with partition member (2009-03-31),
11. 7473306 - Air cleaner (2009-01-06),
12. 7296551 - Intake manifold (2007-11-20),
13. 7261816 - Ion-exchange filter (2007-08-28),
14. 7175698 - Canister (2007-02-13),
15. 7137293 - Canister provided with a leak detection valve for treating evaporated fuel (2006-11-21),
Toyo Roki Seizo Kabushiki Kaisha is a Japanese company that specializes in the design, development, and manufacturing of automotive filters and oil coolers. With over 70 years of experience, they are committed to creating high-quality products that meet the needs of their customers. Toyo Roki Seizo Kabushiki Kaisha constantly invests in research and development to stay at the forefront of technology and innovation in the automotive industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Jan 6 2026

41 Patents

#21 in Shizuoka

#1,897 in Japan

#16,223 in the World

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Shizuoka, Japan

Toyo Roki Seizo Kabushiki Kaisha

Forward Citations = 557

61 inventors:

goldMedal Takenori Suzuki (6 out of 7 patents)

silverMedal Takashi Sakagami (6 out of 6 patents)

bronzeMedal Kouichi Ikuma (6 out of 6 patents)

4.  Hiroshi Morikawa (6 out of 6 patents)

5.  Hiroyasu Ohsawa (5 out of 5 patents)

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