Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866169 | 3-substituted-8-oxo-7-substituted-thioxomethylamino-5 -thia-1-azabicyclo-(4.2.0)oct-2-ene-2-carboxylic acid, diphenylmethyl esters | Robert E. Babine, Ving J. Lee | 1989-09-12 |
| 4808579 | Novel monocycle .beta.-lactam antibacterials | Robert Herman Lenhard | 1989-02-28 |
| 4803280 | Substituted 1,2,3-thia-diazole-4-thiolates | Ving J. Lee | 1989-02-07 |