KH

Ken Hirayama

Bridgestone: 1 patents #1,586 of 2,860Top 60%
OC Otsuka Chemical Co.: 1 patents #131 of 269Top 50%
📍 Tokushima, JP: #693 of 1,059 inventorsTop 70%
Overall (All Time): #3,542,755 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6380288 Rubber composition and pneumatic tires Masahiro Hojo, Tomohiro Kusano, Akihiko Matsue, Kenichi Sugimoto, Shigeki Kamo +2 more 2002-04-30