Inventor
Hans Pratzer
Inventor
Darmstadt, DE
Overview
Patents· 2 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Kprimary
A61KPreparations for medical, dental or toiletry purposes18%
A61QSpecific use of cosmetics or similar toiletry preparations18%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds18%
C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties18%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients9%
C11DDetergent compositions9%
Y10TTechnical subjects covered by former us classification9%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978Patents assigned to MERCK E (1)· patent assignee history
1978–1980Based in Darmstadt, DE· patent location history
1980Patents assigned to MERCK PATENT GMBH (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MERCK E | 1 | 1978 |
| MERCK PATENT GMBH | 1 | 1980 |
Locations
| Location | Patents | Span |
|---|---|---|
| Darmstadt, DE | 2 | 1978–1980 |