Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845229 | Process for intermediates to 1-carbapenems and 1-carbacephems | Chi-Nung Hsiao | 1989-07-04 |
| 4820815 | Azetidinone N-phosphonomethyl esters | — | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845229 | Process for intermediates to 1-carbapenems and 1-carbacephems | Chi-Nung Hsiao | 1989-07-04 |
| 4820815 | Azetidinone N-phosphonomethyl esters | — | 1989-04-11 |