US3867167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of photographic material
Assignee: Fujifilm Holdings Corp
•
Filing: 1971-10-07
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Granted: 1975-02-18
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Expires: 1991-10-07
Abstract
Abstract A method for the production of a photographic material, which comprises, in combination, the steps of A. ROUGHENING A BIAXIALLY STRETCHED POLYSTYRENE FILM SUPPORT, B. IRRADIATING SAID SUPPORT WITH ULTRAVIOLET RAY, C. APPLYING TO THE SURFACE OF SAID FILM AN UNDERCOAT LAYER COMPRISING AT LEAST ONE SOLVENT CAPABLE OF DISSOLVING OR SWELLING POLYSTYRENE AND A RESIN HAVING AN AFFINITY TO GELATIN, AND THEREAFTER D. PROVIDING ON THE UNDERCOAT LAYER A PHOTOGRAPHIC LAYER COMPRISING AN EMULSION OR SUSPENSION CONTAINING GELATIN AS A BINDER.
Inventors
- 👤 Sumitaka Tatsuta
- 👤 Wataru Ueno
- 👤 Nobuhiko Minagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:48
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; B; B29; B29C; B29C59/00; B29C59/16; G03C1/91; G03C1/915; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0827; B29K; B29K2025/00; B29K2995/00; B29K2995/0037; B29K2995/005; B29K2995/0053; Y; Y10; Y10S; Y10S430/00; Y10S430/155
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
A METHOD FOR THE PRODUCTION OF A PHOTOGRAPHIC MATERIAL, WHICH COMPRISES, IN COMBINATION, THE STEPS OF A. ROUGHENING A BIAXIALLY STRETVHED POLYSTYRENE FILM SUPPORT, B. IRRADIATING SAID SUPPORT WITH ULTRAVIOLET RAY, C. APPLYING TO THE SURFACE OF SAID FILM AN UNDERCOAT LAYER COMPRISING AT LEAST ONE SOLVENT CAPABLE OF DISSOLVING OR SWELLING POLYSTYRENE AND A RESIN HAVING AN AFFINITY TO GELATIN, AND THEREAFTER D. PROVIDING ON THE UNDERCOAT LAYER A PHOTOGRAPHIC LAYER COMPRISING AN EMULSION OR SUSPENSION CONTAINING GELATIN AS A BINDER.
Claim 2
Independent Claim
82 words
A METHOD FOR THE PRODUCTION OF A PHOTOGRAPHIC MATERIAL, WHICH COMPRISES, IN COMBINATION, THE STEPS OF A. ROUGHENING A BIAXIALLY STRETVHED POLYSTYRENE FILM SUPPORT, B. IRRADIATING SAID SUPPORT WITH ULTRAVIOLET RAY, C. APPLYING TO THE SURFACE OF SAID FILM AN UNDERCOAT LAYER COMPRISING AT LEAST ONE SOLVENT CAPABLE OF DISSOLVING OR SWELLING POLYSTYRENE AND A RESIN HAVING AN AFFINITY TO GELATIN, AND THEREAFTER D. PROVIDING ON THE UNDERCOAT LAYER A PHOTOGRAPHIC LAYER COMPRISING AN EMULSION OR SUSPENSION CONTAINING GELATIN AS A BINDER.
Claim 3
Dependent Claim
39 words
The method of claim 1, wherein said solvent, which dissolves or swells polystyrene, is a member selected from the group consisting of tetrahydrofuran, lower alkyl acetates, lower alkyl ketones, methyl chloride, ethylene chloride, cyclohexane, benzene, dimethylformamide and mixtures thereof.
Claim 4
Dependent Claim
17 words
The method of claim 1, wherein said solvent incapable of dissolving polystyrene is a lower alkyl alcohol.
Claim 5
Dependent Claim
13 words
The method of claim 1, wherein said polystyrene further contains a white pigment.
Claim 6
Dependent Claim
29 words
The method of claim 4, wherein said white pigment is a member selected from the group consisting of TiO2, BaSO4, CaSO4, BaCO3, lithopone, alumina white, CaCO3, and silica white.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |