US2925340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic stripping paper
Assignee: Eastman Kodak Co
•
Filing: 1957-01-07
•
Granted: 1960-02-16
•
Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 Robert S Bryce
- 👤 William H Griggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A DRY STRIPPING PHOTOGRAPHIC PAPER COMPRISING A PAPER SUPPORT, A SUPERFICIAL COATING ON ONE SURFACE OF SAID SUPPORT CONSISTING OF A WERNER COMPLEX IN WHICH A TRIVALENT NUCLEAR CHROMIUM ATOM IS COORDINATED WITH A CARBOXYLIC ACIDO GROUP HAVING AT LEAST 10 CARBON ATOMS, AND A GELATINO SILVER HALIDE EMULSION LAYER DIRECTLY OVER SAID SUPERFICIAL COATING.
Claim 2
Dependent Claim
55 words
A DRY STRIPPING PHOTOGRAPHIC PAPER COMPRISING A PAPER SUPPORT, A SUPERFICIAL COATING ON ONE SURFACE OF SAID SUPPORT CONSISTING OF A WERNER COMPLEX IN WHICH A TRIVALENT NUCLEAR CHROMIUM ATOM IS COORDINATED WITH A CARBOXYLIC ACIDO GROUP HAVING AT LEAST 10 CARBON ATOMS, AND A GELATINO SILVER HALIDE EMULSION LAYER DIRECTLY OVER SAID SUPERFICIAL COATING.
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) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |