Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4988271 | Apparatus for producing polyurethane foam | Sadao Kumasaka, Satomi Tada, Koretoshi Katsuki, Osamu Fujii, Tutomu Yamamoto +4 more | 1991-01-29 |
| 4610922 | Asphalt impregnated foam and method of producing the same | Sadao Kumasaka, Satomi Tada, Koretoshi Katsuki, Hiroshi Taniguchi | 1986-09-09 |
| 4348164 | Apparatus for continuous production of a slab of polyurethane foam | Osamu Fujii, Toshio Kishimoto, Hisao Kosuge | 1982-09-07 |