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Haruo Koyama
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Saitama, JP
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last 30 patents
Information
Patent Grant
Compound resin wheel
Patent number
5,282,673
Issue date
Feb 1, 1994
Bridgestone Corporation
Haruo Koyama
B60 - VEHICLES IN GENERAL
Information
Patent Grant
One piece type resin wheel
Patent number
5,277,479
Issue date
Jan 11, 1994
Bridgestone Corporation
Haruo Koyama
B60 - VEHICLES IN GENERAL
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Patent Grant
Resin wheel with more than two independently molded parts
Patent number
5,234,259
Issue date
Aug 10, 1993
Bridgestone Corporation
Youichi Nishimuro
B60 - VEHICLES IN GENERAL