Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4684680 | Thermosetting synthetic resin lacquer compositions having improved light stability | Naohiro Kubota, Atsushi Nishimura | 1987-08-04 |
| 4673701 | Alkylidene bisphenol phosphites and phosphates having 2,2,6,6-tetramethyl piperidinyl groups and synthetic resin composition | Motonobu Minagawa, Yutaka Nakahara, Ryozo Arata | 1987-06-16 |
| 4623685 | Thermosetting synthetic resin lacquer compositions of improved light stability | Motonobu Minagawa, Yutaka Nakahara, Ryozo Arata | 1986-11-18 |
| 4525506 | Polyhydric alcohol ethers of 2,2,6,6-tetramethyl-4-piperidone ketals and synthetic resin compositions | Motonobu Minagawa, Naohiro Kubota, Ryozo Arata | 1985-06-25 |
| 4500663 | Light stabilizing N,N,N-tris(2,2,6,6-tetramethyl-4-piperidone ketal)-1,3,5-triazine derivatives and light stabilized synthetic resin compositions | Motonobu Minagawa, Naohiro Kubota, Ryozo Arata | 1985-02-19 |
| 4499220 | Copolymer light stabilizers having at least one 2,2,6,6-tetraalkyl piperidyl group and synthetic resin compositions containing the same | Motonobu Minagawa, Naohiro Kubota | 1985-02-12 |
| 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, Etsuo Tobita | 1985-01-01 |
| 4477616 | Tetra-(2,2,6,6- tetramethyl-4-piperidinyl)-3-methyl-5-(1'2'-biscarboxylate)-ethyl-cyclohe xane or 3-cyclohexene-1,2-dicarboxylates and synthetic resin compositions containing the same | Motonobu Minagawa, Yutaka Nakahara | 1984-10-16 |
| 4468488 | Poly(piperidylamine) alkanes and synthetic resin compositions stabilized thereby | Motonobu Minagawa, Yutaka Nakahara, Ryozo Arata | 1984-08-28 |
| 4460725 | Polyethers containing 2,2,6,6-tetramethyl piperidinyl carboxylic acid ester groups and synthetic resin compositions | William E. Leistner, Motonobu Minagawa, Naohiro Kubota, Ryozo Arata | 1984-07-17 |
| 4415688 | Poly(piperidylamine) alkanes and synthetic resin compositions stabilized thereby | Motonobu Minagawa, Yutaka Nakahara, Ryozo Arata | 1983-11-15 |
| 4415689 | Synthetic resin compositions containing 2,2,6,6-tetramethyl piperidinyl triazines | Motonobu Minagawa, Yutaka Nakahara | 1983-11-15 |
| 4405736 | 2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers and stabilizers for synthetic polymers | Naohiro Kubota, Kazuo Sugibuchi, Yutaka Nakahara | 1983-09-20 |
| 4404301 | Polymeric light stabilizers having at least one 2,2,6,6-tetraalkyl piperidyl group and synthetic resin compositions containing the same | Naohiro Kubota, Ryozo Arata | 1983-09-13 |
| 4396735 | Synergistic light stabilizer compositions for synthetic resins and resin compositions containing the same | Motonobu Minagawa, Naohiro Kubota | 1983-08-02 |
| RE31261 | 2,2,6,6-Tetrasubstituted-4-piperidyl carboxy heterocyclic compounds as stabilizers for synthetic polymers | Motonobu Minagawa, Naohiro Kubota | 1983-05-31 |
| 4378443 | 2,2,6,6-Tetraalkyl-4-piperidyl-bix-spiro-ethers as light stabilizers for synthetic polymers | Motonobu Minagawa, Naohiro Kubota | 1983-03-29 |
| 4351915 | 2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymers | Naohiro Kubota, 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, Naohiro Kubota | 1982-06-22 |
| 4323684 | Process for preparing a 2,2,6,6-tetraalkyl-4-piperidyl spiro aliphatic ether | Naohiro Kubota | 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, Naohiro Kubota | 1982-01-26 |
| 4250312 | Process for preparing 4-piperidone spiroketal compounds | Yutaka Nakahara, Naohiro Kubota | 1981-02-10 |
| 4250313 | Process for preparing 4-piperidone spiroketal compounds | Yutaka Nakahara, Naohiro Kubota | 1981-02-10 |
| 4222931 | Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl ether alcohol or ether, phosphonic acid ester and phenolic antioxidant | Motonobu Minagawa, Yutaka Nakahara, Naohiro Kubota | 1980-09-16 |
| 4219463 | Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester, .beta.-thioalkyl propionic acid ester and phenol | Motonobu Minagawa, Naohiro Kubota, Tohru Haruna | 1980-08-26 |