Issued Patents All Time
Showing 76–93 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4477665 | Substituted 2-keto-1,4-diazacycloalkanes | Pyong-Nae Son | 1984-10-16 |
| 4473694 | Process for the preparation of polysubstituted .alpha.-aminoacetamides | — | 1984-09-25 |
| 4466915 | Non-catalytic ketoform syntheses | — | 1984-08-21 |
| 4466916 | Substituted 2-keto-1,4-diazacycloalkanes | Pyong-Nae Son | 1984-08-21 |
| 4455401 | 2-Keto-diazacycloalkane-urethane oligomers and U-V light stabilized compositions | Pyong-Nae Son | 1984-06-19 |
| 4415684 | UV-Light stabilized compositions containing substituted 1,5-diazacycloalkanes | Pyong-Nae Son | 1983-11-15 |
| 4347379 | Synthesis of alpha-alkoxycarboxylic acids | — | 1982-08-31 |
| 4310429 | Stabilized polymers, novel stabilizers, and synthesis thereof | — | 1982-01-12 |
| 4309336 | Polymeric compositions containing antioxidants | Valerie B. Whitehead | 1982-01-05 |
| 4304712 | Method for extending the useful life of dienic polymers which are sensitive to oxidative degradation and stabilized compositions resistant to oxidative degradation | — | 1981-12-08 |
| 4298737 | Piperdinyl substituted 1,4-diaza-2-cycloalkanones and derivatives thereof | Pyong-Nae Son | 1981-11-03 |
| 4297497 | Synthesis of 2-keto-1,4-diazacycloalkanes | — | 1981-10-27 |
| 4292240 | 2-Keto-1,4-diazacycloalkanes | Pyong-Nae Son | 1981-09-29 |
| 4251435 | High molecular weight piperidine derivatives as UV stabilizers | Pyong-Nae Son | 1981-02-17 |
| 4246412 | Synthesis of 2-keto-1,4-diazacycloalkanes with a soft ion catalyst | — | 1981-01-20 |
| 4240961 | Synthesis of 2-piperazinones and 1,4-diaza-2-keto-cycloheptanes | — | 1980-12-23 |
| 4207228 | UV-Light-stabilized compositions containing substituted 1,5-diazacycloalkanes, novel compounds and synthesis thereof | Pyong-Nae Son | 1980-06-10 |
| 4190571 | Substituted 2-keto-1,4-diazacycloalkanes and UV-light-stabilized compositions containing them | Pyong-Nae Son | 1980-02-26 |