Toshio KOYAMA

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Kobe-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pneumatic tire
- Patent number 9,421,827
- Issue date Aug 23, 2016
- Sumitomo Rubber Industries Ltd.
- Toshio Koyama
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Heavy duty pneumatic tire including variable width grooves and cons...
- Patent number 6,170,546
- Issue date Jan 9, 2001
- Sumitomo Rubber Industries Ltd.
- Toshio Koyama
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Pneumatic tire including sipes
- Patent number 6,003,575
- Issue date Dec 21, 1999
- Sumitomo Rubber Industries, Ltd.
- Toshio Koyama
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Pneumatic radial tire with groove platforms to prevent stone entrap...
- Patent number 4,955,415
- Issue date Sep 11, 1990
- Sumitomo Rubber Industries, Ltd.
- Akihiro Takeuchi
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
PNEUMATIC TIRE
- Publication number 20130269846
- Publication date Oct 17, 2013
- Sumitomo Rubber Industries, Ltd.
- Toshio KOYAMA
- B60 - VEHICLES IN GENERAL