Inventor
Werner Liebe
Inventor
Leverkusen, DE
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Cprimary
G03CPhotosensitive materials for photographic purposes59%
C07DHeterocyclic compounds18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
C07CAcyclic or carbocyclic compounds6%
PatentTitleYear
5,134,059'Color photographic recording material containing color couplers'19925,002,864'Color photographic recording material containing 2-equivalent magenta couplers'19914,855,222'Color photographic recording material'19894,755,452'Color photographic recording material and a process for the production of photographic images'19884,656,125'Photographic recording material'19874,396,707'Photographic material, process for the production thereof, process for the production of photographic images and new triazoles'19834,379,828'Image receptor element for the dye diffusion transfer process'19834,277,557'Photographic material containing a stabilizing agent'19814,260,674'Silver salt photographic material for the production of silver and bubble photographic images with 80% transparency'19814,065,312'Process for the production of photographic vesicular images in photographic silver halide material'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1991Patents assigned to AGFA GEVAERT AG (9)· patent assignee history
1977–1992Based in Leverkusen, DE· patent location history
1992Patents assigned to BAYER AG (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AGFA GEVAERT AG | 9 | 1977–1991 |
| BAYER AG | 1 | 1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Leverkusen, DE | 10 | 1977–1992 |