TH

Tatsuya Hayakawa

SS Sumitomo Wiring Systems: 8 patents #456 of 2,615Top 20%
SC Sugatsune Industrial Co.: 7 patents #2 of 23Top 9%
TO Toyota: 7 patents #4,145 of 26,838Top 20%
SC Sugatsune Kogyo Co.: 2 patents #36 of 79Top 50%
TO Toto: 2 patents #431 of 1,113Top 40%
TC Toyoda Gosei Co.: 2 patents #900 of 2,296Top 40%
Overall (All Time): #142,877 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #TitleCo-InventorsDate
5011029 Coat lift hanger Seiji Sugasawara, Ken Tsuneki, Kazuyoshi Ohshima, Yojiro Nakayama, Seiichiro Tamura 1991-04-30
4938322 Multi-disc damper using viscous fluid Seiji Sugasawara, Ken Tsuneki, Kazuyoshi Ohshima, Youjirou Nakayama, Seiichiroh Tamura 1990-07-03