Issued Patents 1982
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4362830 | Hindered bis-phenol phenyl phosphites and synthetic resin compositions having enhanced stability to heat and light | Yutaka Nakahara | 1982-12-07 |
| 4348308 | Ortho-substituted aryl phosphite additive composition | Yutaka Nakahara, Kazumi Kitsukawa | 1982-09-07 |
| 4346025 | Stabilized vinyl chloride polymer comprising a phenylethylidene aryl phosphite | William E. Leistner, Yutaka Nakahara, Kazumi Kitsukawa | 1982-08-24 |
| 4321191 | Stabilized composition comprising a dihydric alcohol thiodipropionic acid ester | Yutaka Nakahara, Tohru Haruna | 1982-03-23 |
| 4312804 | 2,2,6,6-Tetraalkyl-4-piperidyl alcohol esters of tetradecylene polycarboxylic acids as light stabilizers for synthetic polymers | Naohiro Kubota, Toshihiro Shibata | 1982-01-26 |