US3053656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide developers containing triazine rings
Assignee: Polaroid Corp
•
Filing: 1958-12-17
•
Granted: 1962-09-11
•
Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 Richard S Corley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:47
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
THE PROCESS WHICH COMPRISES DEVELOPING AN EXPOSED SILVER HALIDE EMULSION WITH AN AQUEOUS ALKALINE SOLUTION CONTAINNG A SILVER HALIDE SOLVENT AND AT LEAST ONE COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
28 words
THE PROCESS WHICH COMPRISES DEVELOPING AN EXPOSED SILVER HALIDE EMULSION WITH AN AQUEOUS ALKALINE SOLUTION CONTAINNG A SILVER HALIDE SOLVENT AND AT LEAST ONE COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2386204A
Cited
US2371740A
Cited
US2393755A
Cited
US2500421A
Cited
US2618557A
Cited
US2487569A
Cited
FR1168292A
Cited
US2983606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |