RN

Ritsuo Nakayasu

SI Sumitomo Rubber Industries: 2 patents #809 of 1,637Top 50%
Overall (All Time): #2,179,337 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6881770 Rubber composition for tire and pneumatic tire Yoichi Mizuno, Masato Kawase, Takao Wada, Kazuo Hochi 2005-04-19
5558144 Pneumatic radial tire with hybrid band cord Shinichi Miyazaki 1996-09-24