US3615554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retouchable photographic films for duplicating
Assignee: Fujifilm Holdings Corp
•
Filing: 1970-03-20
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Granted: 1971-10-26
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Expires: 1990-03-20
Abstract
Abstract A retouchable photographic film for duplicating comprising a polyethylene terephthalate film, a mat layer strongly adhered to one or both surfaces of the polyester film, an undercoat formed by applying a gelatin-containing dispersion liquor onto the surface of a mat layer, and an emulsion layer containing a photosensitive silver salt or salts formed on the undercoat, said film being characterized by the use, in the formation thereof, of a swelling agent for the polyester film.
Inventors
- 👤 Haruo Takenaka
- 👤 Teppei Ikeda
- 👤 Toshiaki Okiyama
- 👤 Sueo Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:38
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/95; G03C1/81; G03C1/91; G03C1/93; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/109; Y10S430/153
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
18 words
A photographic film as in claim 1 where mat layers are attached onto both sides of the film.
Claim 2
Dependent Claim
25 words
A photographic film as in claim 1 wherein thE amount of swelling agent is between 3 to 8 percent by weight of the organic solvent.
Claim 3
Dependent Claim
21 words
A photographic film as in claim 1 wherein the thickness of the emulsion layer applied ranges from 1 to 10 microns.
Claim 4
Dependent Claim
20 words
A photographic film as in claim 1 wherein the thickness of said mat layer ranges from 3 to 10 microns.
Claim 5
Dependent Claim
21 words
A photographic film as claimed in claim 5 wherein the thickness of said mat layer ranges from 5 to 8 microns.
Claim 6
Dependent Claim
27 words
A photographic film as in claim 1 wherein the amount of cellulose nitrate employed ranges from 5.0 to 20 percent based on the weight of the copolyester.
Claim 7
Dependent Claim
27 words
A photographic film as in claim 7 wherein the amount of cellulose nitrate employed ranges from 8.0 to 16 percent based on the weight of the copolyester.
Claim 8
Dependent Claim
21 words
A photographic film as in claim 1 wherein the viscosity of the cellulose nitrate employed ranges from one-half to one-eighth seconds.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |