Patent US3244525A successfully refreshed from Google Patents.
US3244525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic layers suitable for the silver dye bleaching process
Assignee: BASF Schweiz AG
•
Filing: 1962-09-07
•
Granted: 1966-04-05
•
Expires: 1982-09-07
Abstract
No abstract record available.
Inventors
- 👤 Mory Rudolf
- 👤 Boehl Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:04
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/28; G03C7/29; C; C09; C09B; C09B43/00; C09B43/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A PHOTOGRAPHER SILVER HALIDE LAYER SUITABLE FOR THE SILVER DYE BLEACHING PROCESS CONTAINING AT LEAST ONE AZO PIGMENT THE MAIN SHARE OF WHICH HAS A DIAMETER SMALLER THAN 0.5U OF THE FORMULA
Claim 2
Dependent Claim
32 words
A PHOTOGRAPHER SILVER HALIDE LAYER SUITABLE FOR THE SILVER DYE BLEACHING PROCESS CONTAINING AT LEAST ONE AZO PIGMENT THE MAIN SHARE OF WHICH HAS A DIAMETER SMALLER THAN 0.5U OF THE FORMULA
References Cited (Backward Citations)
GB422522A
Cited
US2864816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |