Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4792603 | Method of producing a polyether prepolymer | Takeo Saegusa, Masahiro Niwano, Takenobu Kanazawa | 1988-12-20 |
| 4775721 | Process for producing polyamide block copolymer | Masahiro Niwano, Takenobu Kanazawa | 1988-10-04 |
| 4751282 | Star block polyol lactam copolymer and process for the production thereof | Saegusa Takeo, Masahiro Niwano, Takenobu Kanazawa | 1988-06-14 |
| 4650608 | Star block copolymer from lactam and polyol and process for the production thereof | Saegusa Takeo, Masahiro Niwano, Takenobu Kanazawa | 1987-03-17 |