Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5561172 | Method of producing rigid polyurethane foams | Yukio Omure, Tatsumi Tsuchiya, Hitoshi Muramatsu | 1996-10-01 |
| 5457138 | Method for producing open cell rigid polyurethane foam | Hitoshi Muramatsu | 1995-10-10 |
| 5350777 | Production and use of open cell rigid polyurethane foam | Hitoshi Muramatsu, Yasuto Masuda, Kazutaka Uekado, Yasuaki Tanimoto | 1994-09-27 |
| 4405682 | Method for producing fire-resistant, thermally insulating board | Shoichi Fujita, Katsuhisa Kodama | 1983-09-20 |