Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351915 | 2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymers | Toshihiro Shibata, Kazuo Sugibuchi, Motonubu Minagawa | 1982-09-28 |
| 4336183 | 2,2,6,6-Tetramethyl-4-piperidyl carboxylic acid esters and amides of mono and poly alcohols, phenols and amines as stabilizers for synthetic polymers | Yutaka Nakahara, Toshihiro Shibata | 1982-06-22 |
| 4323684 | Process for preparing a 2,2,6,6-tetraalkyl-4-piperidyl spiro aliphatic ether | Toshihiro Shibata | 1982-04-06 |
| 4312804 | 2,2,6,6-Tetraalkyl-4-piperidyl alcohol esters of tetradecylene polycarboxylic acids as light stabilizers for synthetic polymers | Motonobu Minagawa, Toshihiro Shibata | 1982-01-26 |