Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885323 | Poly-2,2,6,6-tetramethyl piperidyl amino spiro glycol ether-1,3,5-triazines | Motonobu Minagawa, Toshihiro Shibata, Etsuo Tobita | 1989-12-05 |
| 4871793 | Polyphenylene sulfide resin compositions having improved resistance to deterioration when exposed to light and containing alkylidene bis (benzotriazolylphenols) | Atsushi Nishimura, Toshio Nakajima | 1989-10-03 |
| 4820844 | Radiation sensitizer | Tsutomu Kagiya, Motonobu Minagawa, Ryoji Kimura, Tsuneo Tsubakimoto, Ryoichi Oshiumi +1 more | 1989-04-11 |
| 4812498 | Polycarbonate resin compositions having improved resistance to deterioration when exposed to light and containing alkylidene bis(benzotriazolyl phenols) | Atsushi Nishimura, Toshio Nakajima | 1989-03-14 |
| 4798836 | Bis-(2,2,6,6-tetramethyl-piperidyl) diimides as light stabilizers for synthetic polymers | Motonobu Minagawa, Bunji Hirai, Kazuo Sugibuchi | 1989-01-17 |