US2852378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subbing photographic film
Assignee: Eastman Kodak Co
•
Filing: 1955-11-01
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Granted: 1958-09-16
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Expires: 1975-11-01
Abstract
No abstract record available.
Inventors
- 👤 Gale F Nadeau
- 👤 Walter R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PHOTOGRAPHIC ELEMENT COMPRISING A POLYETHYLENE TEREPHTHALATE FILM BASE, A FIRST SUBBING COMPRISING A VINYLIDENE CHLORIDE BUTYL ACRYLATE-ACRYLIC ACID TERPOLYMER, A SECOND SUBBING LAYER COMPRISING GELATIN AND FROM 12 TO 200% CHROMIC CHLORIDE BASED ON THE WEIGHT OF THE GELATIN IN THE SUBBING LAYER AND A LIGHT-SENSITIVE GELATINO SILVER HALIDE EMULSION.
Claim 2
Dependent Claim
51 words
A PHOTOGRAPHIC ELEMENT COMPRISING A POLYETHYLENE TEREPHTHALATE FILM BASE, A FIRST SUBBING COMPRISING A VINYLIDENE CHLORIDE BUTYL ACRYLATE-ACRYLIC ACID TERPOLYMER, A SECOND SUBBING LAYER COMPRISING GELATIN AND FROM 12 TO 200% CHROMIC CHLORIDE BASED ON THE WEIGHT OF THE GELATIN IN THE SUBBING LAYER AND A LIGHT-SENSITIVE GELATINO SILVER HALIDE EMULSION.
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |