Patent US770600A successfully refreshed from Google Patents.
US3201250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimensionally stable gelatincontaining film product
Assignee: Eastman Kodak Co
•
Filing: 1959-01-12
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Granted: 1965-08-17
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Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 George M Coryell
- 👤 Henry H Fogler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:57
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; G03C1/494; G03C1/496; G03C1/795; Y; Y10; Y10S; Y10S430/00; Y10S430/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PHOTOGRAPHIC FILM PRODUCT HAVING GOOD DIMENSIONAL STAILITY COMPRISED OF (A) A FILM BASE HAVING A THICKNESS OF FROM ABOUT .004 TO .008 INCH SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE FILM BASE AND POLYETHYLENE TEREPHTHALATE FILM BASE, (B) AT LEAST ONE NON-GELATIN-CONTAINING SUB LAYER ON SAID FILM BASE, AND (C) A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER COMPRISED OF GELATIN AS THE SOLE BINDER MATERIAL, THE GELATIN CONTENT OF SAID LAYER BEING FROM ABOUT 0.2 TO 0.45 GRAM PER SQUARE FOOT OF FILM BASE, THE TOTAL GELATIN CONTENT OF THE PHOTOGRAPHIC FILM PRODUCT BEING LESS THAN ABOUT 0.90 GRAM PER SQUARE FOOT OF FILM BASE.
Claim 2
Dependent Claim
105 words
A PHOTOGRAPHIC FILM PRODUCT HAVING GOOD DIMENSIONAL STAILITY COMPRISED OF (A) A FILM BASE HAVING A THICKNESS OF FROM ABOUT .004 TO .008 INCH SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE FILM BASE AND POLYETHYLENE TEREPHTHALATE FILM BASE, (B) AT LEAST ONE NON-GELATIN-CONTAINING SUB LAYER ON SAID FILM BASE, AND (C) A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER COMPRISED OF GELATIN AS THE SOLE BINDER MATERIAL, THE GELATIN CONTENT OF SAID LAYER BEING FROM ABOUT 0.2 TO 0.45 GRAM PER SQUARE FOOT OF FILM BASE, THE TOTAL GELATIN CONTENT OF THE PHOTOGRAPHIC FILM PRODUCT BEING LESS THAN ABOUT 0.90 GRAM PER SQUARE FOOT OF FILM BASE.
References Cited (Backward Citations)
GB172280A
Cited
US1955898A
Cited
US2295013A
Cited
US2350380A
Cited
US2420455A
Cited
GB585477A
Cited
US2527261A
Cited
US2614928A
Cited
US2618556A
Cited
US2652345A
Cited
US2787543A
Cited
US2816027A
Cited
US2756148A
Cited
US2852378A
Cited
US2972534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |