Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8835687 | Method for preparation of 4,4′-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine with the base catalyst complex | Jin-Eok Kim, Han Jin Kwag, Sang Hee Park | 2014-09-16 |
| 8759587 | Method for preparation of 4,4′-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine by using 4-nitroaniline | Jin-Eok Kim, Han Jin Kwag, Sang Hee Park | 2014-06-24 |