Inventor
Jozef Frans Willems
Inventor
Wilrijk, BE
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Cprimary
G03CPhotosensitive materials for photographic purposes50%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
C07DHeterocyclic compounds9%
Y10TTechnical subjects covered by former us classification9%
B41MPrinting, duplicating, marking, or copying processes5%
C07CAcyclic or carbocyclic compounds5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%
PatentTitleYear
RE030107'Thermographic recording process'19794,111,697'Novel antifogging and/or stabilizing compounds for silver halide photography'19784,082,901'Thermographic material'19784,072,526'Development of photographic silver halide material'19784,038,083'Photothermographic recording sheet'19774,028,110'Development of exposed lith-emulsions'19774,026,708'Direct-positive silver halide emulsions having incorporated developers'19774,013,471'Development of photographic silver halide elements'19774,013,473'Recording materials and image receiving materials for producing copies in a dry way'19774,004,926'Formation of azine dyes'19773,996,397'Thermographic recording process'19763,986,877'Development promoting compounds for silver halide photography'19763,945,829'Color photographic multilayer material with improved color density'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1978Patents assigned to AGFA GEVAERT NV (11)· patent assignee history
1976Patents assigned to AGFA GEVAERT AG (1)· patent assignee history
1976–1979Based in Wilrijk, BE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AGFA GEVAERT NV | 11 | 1976–1978 |
| AGFA GEVAERT AG | 1 | 1976 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wilrijk, BE | 13 | 1976–1979 |