Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5081170 | Stabilized polyolefin resin composition | Masaki Yagi, Takao Nishina | 1992-01-14 |
| 4798836 | Bis-(2,2,6,6-tetramethyl-piperidyl) diimides as light stabilizers for synthetic polymers | Motonobu Minagawa, Yutaka Nakahara, Bunji Hirai | 1989-01-17 |
| 4663459 | Method for preparing 2,2,6,6-tetramethyl-4-oxopiperidine | Tohru Haruna, Atsushi Nishimura | 1987-05-05 |
| 4661597 | Process for preparing 2,2,6,6-tetramethyl-4-oxopiperidine | Tohru Haruna, Atsushi Nishimura | 1987-04-28 |
| 4405736 | 2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers and stabilizers for synthetic polymers | Naohiro Kubota, Toshihiro Shibata, Yutaka Nakahara | 1983-09-20 |
| 4405737 | N-2-Hydroxypropyl piperidines and compositions thereof | Bunji Hirai, Naohiro Kubota | 1983-09-20 |
| 4351915 | 2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymers | Naohiro Kubota, Toshihiro Shibata, Motonubu Minagawa | 1982-09-28 |
| 4186151 | Process for preparing a 5,5'-methylenebis(2-hydroxy-4-alkoxybenzophenone) | Naohiro Kubota, Toshihiro Shibata | 1980-01-29 |