Inventor
Gerd Fischer
Inventor
Limburg, DE
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Dprimary
C07DHeterocyclic compounds50%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations42%
Y02PClimate change mitigation technologies in the production or processing of goods8%
PatentTitleYear
5,637,721'Process for the preparation of cephem prodrug esters'19975,614,623'Diastereomers of 1-(isopropoxycarbonyloxy)ethyl 3-cephem-4-carboxylate and processes for their preparation'19975,594,133'Crystalline acid addition salts of diastereomerically pure 1-(2,2-dimethylpropinonyloxy)-ethyl-3-cephem-4-carboxylate'19975,589,594'Process for the preparation of cephem prodrug esters'19965,556,850'Crystalline acid addition salts of diastereomerically pure 1-(2,2-dimethyl-propionyloxy)-ethyl-3-cephem-4-carboxylate'19965,550,232'Diastereomers of 1-(isopropoxycarbonyloxy) ethyl 3-cephem 4-carboxylate'19965,461,043'Diastereomers of 1-(isopropoxycarbonyloxy)ethyl 3-cephem-4-carboxylate'19955,410,042'Process for the cleavage of cephalosporin prodrug esters to 7-amino-3-methoxymethylceph-3-em-4-carboxylic acid'1995RE034865'Cephalosporin derivatives'19955,306,717'Cephalosporin derivatives'19945,198,544'Process for the preparation of penem compounds'19935,100,887'Cephalosporin derivatives'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–1997Patents assigned to HOECHST AG (12)· patent assignee history
1992–1995Based in Frankfurt am Main, DE· patent location history
1995–1997Based in Limburg, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 12 | 1992–1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Limburg, DE | 8 | 1995–1997 |
| Frankfurt am Main, DE | 4 | 1992–1995 |