Issued Patents All Time
Showing 76–82 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4386030 | Process for preparing 6-(1'-hydroxyethyl)-2-substituted-pen-2-em-3-carboxylic acid | Burton G. Christensen | 1983-05-31 |
| 4301074 | 6-(1'-Hydroxyethyl)-2-substituted-pen-2-em-3-carboxylic acid | Burton G. Christensen | 1981-11-17 |
| 4296111 | 7-Substituted methyl cephalosporins derivatives and analogues thereof | Thomas R. Beattie, Burton G. Christensen | 1981-10-20 |
| 4293555 | 6- and 6,6-Disubstituted-2-substituted-oxapen-2-em-3-carboxylic acids | Burton G. Christensen | 1981-10-06 |
| 4255330 | Process for preparing 6-substituted amino-2-substituted-pen-2-em-3-carboxylic acid | Burton G. Christensen | 1981-03-10 |
| 4215124 | 6 Substituted amino-2-substituted-pen-2-em-3-carboxylic acid | Burton G. Christensen | 1980-07-29 |
| 4207323 | 6-Substituted methyl penicillins, derivatives and analogues thereof | Thomas R. Beattie, Burton G. Christensen | 1980-06-10 |