US3316093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored photoimages from ferric salts of phenolic alpha-hydroxy acids
Assignee: GAF Chemicals Corp
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Filing: 1964-01-02
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Granted: 1967-04-25
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Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Cerwonka Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:41
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/105; G03C; G03C1/00; G03C1/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD OF FORMING COLORED POHOGRAPHIC IMAGES WHICH COMPRISES COATING A SUPPORT SHEET WITH A LIGHTSENSITIVE COATING COMPOSITION WHICH COMPRISES AN AQUEOUS SOLUTIN OF A FERRIC SALT, A PHENOLICA-HYDROXY ACID, AND A HYDROPHILIC COLLOIDAL BINDER, EXPOSING THE COATED SUPPORT TO ACTINIC RADIATION, DEVELOPING AN IMAGE IN EXPOSED AREAS BY APPLICATION OF AQUEOUS JHYDROGEN PEROXIDE, AND WASHING OUT THE UNDEVELOPED AREAS TO LEAVE A COLOR IMAGE IN EXPOSED AREAS.
Claim 2
Independent Claim
68 words
A METHOD OF FORMING COLORED POHOGRAPHIC IMAGES WHICH COMPRISES COATING A SUPPORT SHEET WITH A LIGHTSENSITIVE COATING COMPOSITION WHICH COMPRISES AN AQUEOUS SOLUTIN OF A FERRIC SALT, A PHENOLICA-HYDROXY ACID, AND A HYDROPHILIC COLLOIDAL BINDER, EXPOSING THE COATED SUPPORT TO ACTINIC RADIATION, DEVELOPING AN IMAGE IN EXPOSED AREAS BY APPLICATION OF AQUEOUS JHYDROGEN PEROXIDE, AND WASHING OUT THE UNDEVELOPED AREAS TO LEAVE A COLOR IMAGE IN EXPOSED AREAS.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |