HH

Hiroshi Hirakawa

The Yokohama Rubber Co.: 10 patents #142 of 1,136Top 15%
BL Bridgestone Tire Company Limited: 2 patents #115 of 438Top 30%
NC Nippon Zeon Co.: 1 patents #307 of 609Top 55%
Overall (All Time): #429,237 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
5405690 Rubber-rubber bonded composite structure 1995-04-11
5370915 Rubber-rubber bonded composite structure 1994-12-06
5264259 Energy absorbing structure Hajime Satoh, Hiroyuki Hamada 1993-11-23
5236030 Pneumatic tire with inner liner of ultra high molecular weight polyethylene film and method of making the same Makoto Misawa, Masao Inoue 1993-08-17
4748168 Rubber compositions for tire treads Shinji Kawakami, Makoto Misawa, Takekazu Inoue, Yasuhiro Ishikawa 1988-05-31
4396052 Radial tire Asahiro Ahagon, Norimichi Takanashi 1983-08-02
4373566 Pneumatic radial tire having a reduced rolling resistance Akio Sato, Takashi Takusagawa, Nobumasa Ikeda 1983-02-15
4349061 Pneumatic radial tires for passenger cars having a low rolling resistance Akio Sato, Takashi Takusagawa, Nobumasa Ikeda 1982-09-14
4342670 Process for preparing rubber compositions for tire treads Asahiro Ahagon, Makoto Misawa 1982-08-03
4323485 Rubber compositions for tire treads having low rolling resistance Asahiro Ahagon, Makoto Misawa, Kazuo Miyasaka 1982-04-06
4321168 Process for preparing rubber composition for tire treads Akio Ueda, Shuichi Akita, Asahiro Ahagon 1982-03-23
4309318 Tread compositions for tires having low rolling resistance Asahiro Ahagon, Makoto Misawa, Kazuo Miyasaka 1982-01-05