NS

Nobuyuki Sumida

DA Daihen: 3 patents #87 of 305Top 30%
AC Allied Consulting: 1 patents #540 of 1,310Top 45%
Overall (All Time): #1,296,560 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5226222 Fabrication method for transformers with an amorphous core Katsumi Hanaoka, Masatake Hirai, Masatake Kokado, Takeshi Uchikura, Syoichi Shii +7 more 1993-07-13
4972573 Method of manufacturing wound transformer cores Yasuo Yamamoto, Katsumi Hanaoka, Masatake Hirai, Masatake Kokado 1990-11-27
4637563 Toroidal winding apparatus Kazuhiro Arii, Teruaki Tanaka, Kouhei Arisaka 1987-01-20
4631509 Electrical induction apparatus with support inside casing Kazuhiro Arii, Yasuo Yamamoto, Katsumi Hanaoka, Kazuhiro Tanaka 1986-12-23