Inventor
Werner Hartwich
Inventor
K oln, DE
Overview
Patents· 2 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments40%
C09DCoating compositions, e.g. paints, varnishes or lacquers20%
D21HPulp compositions20%
G02BOptical elements, systems or apparatus20%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–1996Patents assigned to BAYER AG (2)· patent assignee history
1995Based in Ko ln, DE· patent location history
1996Based in K oln, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 2 | 1995–1996 |
Locations
| Location | Patents | Span |
|---|---|---|
| K oln, DE | 1 | 1996 |
| Ko ln, DE | 1 | 1995 |