US3287134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photgraphic layers and their preparation
Assignee: EIDP Inc
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Filing: 1964-03-09
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Granted: 1966-11-22
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Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 Kainrath Paul
- 👤 Herbert Gunther
- 👤 Schiller Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:33
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C7/00; G03C7/30; G03C7/388; G03C7/3885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PHOTOGRAPHIC ELEMENT HAVING A LIGHT-SENSITIVE SILVER HALIDE LAYER AND COMPRISING AT LEAST ONE WATERPERMEABLE, MACROMOLECULAR ORGANIC COLLOID LAYER HAVING DISPERSED THERETHROUGH (1) A LIPOPHILE ORGANIC PHOTOGRAPHIC ADJUVANT COMPOUND CONTAINING AT LEAST ONE ALIPHATIC CARBON CHAIN OF AT LEAST 5 CARBON ATOMS AND BEING SELECTED FROM THE GROUP CONSISTING OF: (A) COLOR FORMERS CAPABLE OF FORMING UPON CHROMOGENIC DEVELOPMENT OF EXPOSED SILVER HALIDE GRAINS WITH A PRIMARY AROMATIC AMINE COLOR DEVELOPING AGENT A DYE SELECTED FROM THE GROUP CONSISTING OF QUINONEIMINE AND AZOMETHINE DYES, (B) LIGHT-FILTER DYES CAPABLE OF ABSORBING LIGHT IN THE VISIBLE AND ULTRAVIOLET REGIONS OF THE SPECTRUM, (C) ANTIOXIDANTS CAPABLE OF REDUCING THE OXIDATION OF LATENT SILVER IMAGES; AND (2) A TRIGLYCERIDE OF A MIXTURE OF LONG CHAIN ALIPHATIC MONOCARBOXYLIC ACIDS OF AT LEAST 8 CARBON ATOMS AND BEING LIQUID AT 90*C.
Claim 2
Dependent Claim
135 words
A PHOTOGRAPHIC ELEMENT HAVING A LIGHT-SENSITIVE SILVER HALIDE LAYER AND COMPRISING AT LEAST ONE WATERPERMEABLE, MACROMOLECULAR ORGANIC COLLOID LAYER HAVING DISPERSED THERETHROUGH (1) A LIPOPHILE ORGANIC PHOTOGRAPHIC ADJUVANT COMPOUND CONTAINING AT LEAST ONE ALIPHATIC CARBON CHAIN OF AT LEAST 5 CARBON ATOMS AND BEING SELECTED FROM THE GROUP CONSISTING OF: (A) COLOR FORMERS CAPABLE OF FORMING UPON CHROMOGENIC DEVELOPMENT OF EXPOSED SILVER HALIDE GRAINS WITH A PRIMARY AROMATIC AMINE COLOR DEVELOPING AGENT A DYE SELECTED FROM THE GROUP CONSISTING OF QUINONEIMINE AND AZOMETHINE DYES, (B) LIGHT-FILTER DYES CAPABLE OF ABSORBING LIGHT IN THE VISIBLE AND ULTRAVIOLET REGIONS OF THE SPECTRUM, (C) ANTIOXIDANTS CAPABLE OF REDUCING THE OXIDATION OF LATENT SILVER IMAGES; AND (2) A TRIGLYCERIDE OF A MIXTURE OF LONG CHAIN ALIPHATIC MONOCARBOXYLIC ACIDS OF AT LEAST 8 CARBON ATOMS AND BEING LIQUID AT 90*C.
References Cited (Backward Citations)
US2322027A
Cited
US2369469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |