Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4491643 | Bis(2,2,6,6-tetramethylpiperidyl-1,3,5-triazinyl)-spirodiamines and spiroglycol ethers and synthetic resin compositions containing the same | Motonobu Minagawa, Yutaka Nakahara, Toshihiro Shibata | 1985-01-01 |
| 4481317 | Hindered bisphenol diphosphonites and stabilized synthetic resin compositions containing the same | Yutaka Nakahara, Tohru Haruna | 1984-11-06 |
| 4371647 | 2,6-Di-tertiary butyl phenyl pentaerythritol spiro bis-phosphites enhancing the stability to heat and light of synthetic resin | Motonobu Minagawa, Yutaka Nakahara | 1983-02-01 |