SY

Shinzo Yamakawa

NP Nippon Telegraph And Telephone Public: 3 patents #61 of 842Top 8%
JR Japan Synthetic Rubber: 1 patents #256 of 558Top 50%
NT NTT: 1 patents #2,911 of 4,871Top 60%
📍 Hitachinaka, JP: #962 of 2,447 inventorsTop 40%
Overall (All Time): #1,302,453 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4801186 Coated optical fiber, fabrication process thereof and fabrication apparatus thereof Makoto Wagatsuma, Fumio Yamamoto, Takao Kimura, Yoshito Shuto 1989-01-31
4720529 UV-ray curable polyurethane composition and coated optical fiber Takao Kimura, Ryotaro Ohono 1988-01-19
4509820 Protective packaging assembly and method Norio Murata, Mitsutoshi Hoshino 1985-04-09
4497759 Drawing of polyoxymethylene using dielectric heating Koichi Nakagawa, Osamu Maeda 1985-02-05