SK

Sadao Kumasaka

HI Human Industry: 5 patents #1 of 14Top 8%
TI Toyo Rubber Chemical Industrial: 4 patents #1 of 13Top 8%
📍 Nishitokyo, JP: #22 of 277 inventorsTop 8%
Overall (All Time): #391,137 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
5079276 Method of manufacturing polyurethane foam Satomi Tada, Koretoshi Katsuki, Osamu Fujii, Shigeo Kuga 1992-01-07
4988271 Apparatus for producing polyurethane foam Satomi Tada, Koretoshi Katsuki, Osamu Fujii, Tutomu Yamamoto, Ryoji Nagamine +4 more 1991-01-29
4814515 Method of manufacturing a modified polyhydroxy compound Satomi Tada, Hirokazu Wakabayashi 1989-03-21
4810298 Manufacturing method of asphalt foam Koretoshi Katsuki 1989-03-07
4666393 Apparatus for manufacturing polyurethane foam slabs in a batch Satomi Tada, Osamu Fujii, Goro Yoneyama, Masao Idei 1987-05-19
4610922 Asphalt impregnated foam and method of producing the same Satomi Tada, Koretoshi Katsuki, Ryoji Nagamine, Hiroshi Taniguchi 1986-09-09
4596684 Method for manufacturing low density rubber foamed body Shigeo Horikoshi 1986-06-24
4520141 Method for manufacturing phenolic resin foam Satomi Tada 1985-05-28
4517312 Process for regenerating resin Satomi Tada, Shigeo Horikoshi, Tamaki Kamanaka, Hiroshi Taniguchi 1985-05-14
4463951 Ball Satomi Tada 1984-08-07
4352651 Mold equipment Satomi Tada, Goro Yoneyama, Kazuo Hashimoto 1982-10-05
4338271 Method for manufacturing a low density synthetic resin body Satomi Tada, Shigeo Horikoshi, Tokio Tsuchiya, Masashi Numabe 1982-07-06
4325688 Mold equipment Satomi Tada, Goro Yoneyama, Junichi Seki 1982-04-20