US3178291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic material for the silver dyestuff bleaching method
Assignee: BASF Schweiz AG
•
Filing: 1963-02-14
•
Granted: 1965-04-13
•
Expires: 1983-02-14
Abstract
No abstract record available.
Inventors
- 👤 Mory Rudolf
- 👤 Anderau Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:45
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/28; G03C7/29; C; C09; C09B; C09B43/00; C09B43/12; C09B43/136; C09B43/16; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
PHOTOGRAPHIC MATERIAL FOR THE SILVER DYESTUFF BLEACHING PROCESS THAT CONTAINS ON A SUPPORT A SILVER HALIDE EMULSION LAYER HAVING AT LEAST ONE DYESTUFF OF THE FORMULA:
Claim 2
Dependent Claim
26 words
PHOTOGRAPHIC MATERIAL FOR THE SILVER DYESTUFF BLEACHING PROCESS THAT CONTAINS ON A SUPPORT A SILVER HALIDE EMULSION LAYER HAVING AT LEAST ONE DYESTUFF OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |