US2614932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic stripping film
Assignee: Eastman Kodak Co
•
Filing: 1949-04-01
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Granted: 1952-10-21
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Expires: 1969-04-01
Abstract
No abstract record available.
Inventors
- 👤 Gale F Nadeau
- 👤 Clemens B Starck
- 👤 Carl F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:50
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PHOTOGRAPHIC STRIPPING FILM COMPRISING A SURFACE HYDROLYZED CELLULOSE TRIACETATE TEMPORARY SUPPORT, A CELLULOSE ACETATE BUTYRATE PERMANENT SUPPORT RELEASABLY ATTACHED TO THE HYDROLYZED SURFACE OF SAID TEMPORARY SUPPORT BY MEANS OF A WATER-SOLUBLE CELLULOSE ACETATE LAYER, AND A PHOTOGRAPHIC EMULSION LAYER PERMANENTLY ATTACHED TO SAID PERMANENT SUPPORT.
Claim 2
Dependent Claim
47 words
A PHOTOGRAPHIC STRIPPING FILM COMPRISING A SURFACE HYDROLYZED CELLULOSE TRIACETATE TEMPORARY SUPPORT, A CELLULOSE ACETATE BUTYRATE PERMANENT SUPPORT RELEASABLY ATTACHED TO THE HYDROLYZED SURFACE OF SAID TEMPORARY SUPPORT BY MEANS OF A WATER-SOLUBLE CELLULOSE ACETATE LAYER, AND A PHOTOGRAPHIC EMULSION LAYER PERMANENTLY ATTACHED TO SAID PERMANENT SUPPORT.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |