US3311474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic material
Assignee: Gevaert Photo Producten NV
•
Filing: 1963-08-19
•
Granted: 1967-03-28
•
Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Willems Jozef Frans
- 👤 Sevens Gerard Michiel
- 👤 Sels Francis Jeanne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:51
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/42; C07D413/00; C07D413/02; C07D413/04; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
PHOTOGRAPHIC MATERIAL COMPRISING AT LEAST ONE LIGHTSENSITIVE SILVER HALIDE EMULSION LAYER WHEREIN SAID MATERIAL COMPRISES IN AT LEAST ONE WATER-PERMEABLE LAYER A COMPOUND OF THE FOLLOWING FORMULA: Z<(-C(-S-A)=N-) WHEREIN: Z REPRESENTS THE ATOMS NECESSARY TO COMPLETE A HETEROCYCLIC RING, AND A REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF A -COR GROUP AND A -SO2R GROUP WHEREIN R REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ALKYL RADICAL, AND AN ARYL RADICAL.
Claim 2
Dependent Claim
75 words
PHOTOGRAPHIC MATERIAL COMPRISING AT LEAST ONE LIGHTSENSITIVE SILVER HALIDE EMULSION LAYER WHEREIN SAID MATERIAL COMPRISES IN AT LEAST ONE WATER-PERMEABLE LAYER A COMPOUND OF THE FOLLOWING FORMULA: Z<(-C(-S-A)=N-) WHEREIN: Z REPRESENTS THE ATOMS NECESSARY TO COMPLETE A HETEROCYCLIC RING, AND A REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF A -COR GROUP AND A -SO2R GROUP WHEREIN R REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ALKYL RADICAL, AND AN ARYL RADICAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |