Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4466916 | Substituted 2-keto-1,4-diazacycloalkanes | John T. Lai | 1984-08-21 |
| 4455401 | 2-Keto-diazacycloalkane-urethane oligomers and U-V light stabilized compositions | John T. Lai | 1984-06-19 |
| 4415684 | UV-Light stabilized compositions containing substituted 1,5-diazacycloalkanes | John T. Lai | 1983-11-15 |
| 4326063 | High molecular weight piperidine derivatives as UV stabilizers | — | 1982-04-20 |
| 4326061 | Substituted decahydroquinolines | Robert W. Layer | 1982-04-20 |
| 4298737 | Piperdinyl substituted 1,4-diaza-2-cycloalkanones and derivatives thereof | John T. Lai | 1981-11-03 |
| 4292237 | Polymeric ultraviolet light stabilizers containing hindered alkyl amines | Robert W. Layer | 1981-09-29 |
| 4292240 | 2-Keto-1,4-diazacycloalkanes | John T. Lai | 1981-09-29 |
| 4251435 | High molecular weight piperidine derivatives as UV stabilizers | John T. Lai | 1981-02-17 |
| 4207228 | UV-Light-stabilized compositions containing substituted 1,5-diazacycloalkanes, novel compounds and synthesis thereof | John T. Lai | 1980-06-10 |
| 4190571 | Substituted 2-keto-1,4-diazacycloalkanes and UV-light-stabilized compositions containing them | John T. Lai | 1980-02-26 |