Inventor
Hanfried Arnold
Inventor
Berlin, DE
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Jprimary
C07JSteroids75%
A61KPreparations for medical, dental or toiletry purposes25%
PatentTitleYear
4,871,482'Process for the preparation of 1-methylandrosta-1,4-diene-3,17,dione, and the novel intermediates for this process'19894,599,200'Process for the production of 17.alpha.-acetoxy-1.alpha.,2.alpha.-methylene-4,6-pregnadiene-3,20-dione'19864,113,751'Stabilizer for estrogens'19784,021,458'Process for the preparation of 3-hemisulfate-17.alpha.-hydroxy steroids'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1989Patents assigned to SCHERING AG (4)· patent assignee history
1977–1989Based in Berlin, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SCHERING AG | 4 | 1977–1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Berlin, DE | 4 | 1977–1989 |