Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7312337 | Oxadiazoles and their manufacture | Chang-Kyu Kim | 2007-12-25 |
| 7268235 | Method for preparation of N-pyrazolylamidoximes | Chang-Kyu Kim | 2007-09-11 |
| 5981760 | Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and adjusting them | Chang-Kyu Kim, Joan C. Potenza, David Hoke, Robert F. Romanet | 1999-11-09 |
| 5864042 | Process for preparation of a 4-amino-5-mercapto-3-substituted-1,2,4!triazole compound | Ping-Wah Tang | 1999-01-26 |
| 5461164 | Oxidative desulfurization and halogenation of thioacylated pyrazolotriazole compounds | Chang K. Kim | 1995-10-24 |
| 5457210 | Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and using them | Chang-Kyu Kim, Joan C. Potenza, David Hoke, Robert F. Romanet | 1995-10-10 |
| 5166378 | Selective monoacylation of substituted hydrazines | Chang K. Kim, Michael E. Campbell | 1992-11-24 |