Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4413076 | Polyalkylpiperdine side chain stabilizers for synthetic polymer compositions | Nobuo Soma, Takao Yoshioka, Tomoyuki Kurumada | 1983-11-01 |
| 4321374 | Triazine derivatives | Toshimasa Toda, Tomoyuki Kurumada | 1982-03-23 |
| 4265803 | Polymers containing polyalkylpiperidines and use thereof as stabilizers | Nobuo Soma, Takao Yoshioka, Tomoyuki Kurumada | 1981-05-05 |
| 4241208 | Piperidine derivatives | Keisuke Murayama, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi +5 more | 1980-12-23 |
| 4237294 | 2,2,6,6-Tetramethylpiperidine derivatives | Nobuo Soma, Takao Yoshioka, Tomoyuki Kurumada | 1980-12-02 |
| 4219465 | Piperidine-spiro-hydantoin derivatives and their use as polymer stabilizers | Nobuo Soma, Takao Yoshioka, Tomoyuki Kurumada | 1980-08-26 |
| 4212974 | Piperidine derivatives | Keisuke Murayama, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi +5 more | 1980-07-15 |