Issued Patents 1989
Showing 1–2 of 2 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 | William V. Curran, Ving J. Lee | 1989-09-12 |
| 4800199 | 3-[2-thiazoloamino]-8-oxo-7-substituted-5-thia-1-a zabicyclo-[4.2.0]oct-2-ene-2-carboxylic acid and salts thereof and diphenylmethyl esters thereof | Ving J. Lee | 1989-01-24 |