Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4292353 | Urethane modified polyisocyanurate foam surfaced with aluminum foil or sheet | Takashi Ohashi, Toru Okuyama, Akira Suzuki, Katsuhiko Arai, Minoru Kojima +5 more | 1981-09-29 |
| 4205136 | Process for producing a rigid polyurethane foam having excellent flame retardance and low-smoke development | Takashi Ohashi, Minoru Kojima, Masako Yoshida, Toru Okuyama | 1980-05-27 |
| 4189541 | Method for producing heat resistant and flame resistant polyisocyanurate foams using little or no organosilicone surfactant | Takashi Ohashi, Toru Okuyama, Katsuhiko Arai, Akira Suzuki, Minoru Kojima +2 more | 1980-02-19 |