US3069263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic products and processes using alkali permeable polymeric layers
Assignee: Polaroid Corp
•
Filing: 1958-12-17
•
Granted: 1962-12-18
•
Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 Howard C Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:16
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
IN A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE IN COLOR WHEREIN THE LATENT IMAGE CONTAINER IN AN EXPOSED SILVER HALIDE EMULSION LAYER OF A PHOTOSENSITIVE ELEMENT IS DEVELOPED TO PROVIDE AN IMAGEWISE DISTRIBUTION OF COLOR-PROVIDING SUBSTANCE IN SAID EMULSION, AND SAID IMAGEWISE DISTRIBUTION OF COLOR-PROVIDING SUBSTANCES IS TRANSFERRED BY AN AQUEOUS ALKALINE PROCESSING SOLUTION TO A SUPERPOSED IMAGE-RECEIVING LAYER TO IMPART TO SAID IMAGE-RECEIVING LAYER A COLOR-IMAGE, THE IMPROVEMENT OF HAVING THE COLOR-PROVIDING SUBSTANCE IN A POLYMERIC LAYER BEHIND THE SILVER HALIDE EMULSION LAYER AND DURING PROCESSING, PERMEATING SAID PHOTOSENSITIVE ELEMENT WITH SAID AQUEOUS ALKALINE PROCESSING SOLUTION AND SOLUBILIZING SAID COLOR-PROVIDING SUBSTANCE FROM SAID POLYMERIC LAYER, SAID POLYMERIC LAYER COMPRISING A POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) N-ALKYL-A,B-UNSATURATED CARBOXAMIDE HOMOPOLYMERS, (B) COPOLYMERS OF A FIRST N-ALKYLA,B-UNSATURATED CARBOXAMIDE MONOMER WITH AT LEAST A SECOND N-ALKYL-A,B-UNSATURATED CARBOXAMIDE MONOMER AND (C) COPOLYMERS OF N-ALKYL-A,B-UNSATURATED CARBOXAMIDES WITH N-HYDROXYALKYL-A,B-UNSATURATED CARBOXAMIDES, THE CARBOXAMIDES USED TO PREPARE THE POLYMERS OF SAID POLYMERIC LAYER BEING DERIVATIVES OF A,B-UNSATURATED ALIPHATIC MONOCARBOXYLIC ACIDS COMPRISING LESS THAN SIX CARBON ATOMS AND THE N-ALKYL- AND N-HYDROXYALKYL-SUBSTITUENTS OF SAID CARBOXAMIDES USED TO PREPARE THE POLYMERS IN SAID POLYMERIC LAYER COMPRISING LESS THAN FIVE CARBON ATOMS.
Claim 2
Dependent Claim
194 words
IN A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE IN COLOR WHEREIN THE LATENT IMAGE CONTAINER IN AN EXPOSED SILVER HALIDE EMULSION LAYER OF A PHOTOSENSITIVE ELEMENT IS DEVELOPED TO PROVIDE AN IMAGEWISE DISTRIBUTION OF COLOR-PROVIDING SUBSTANCE IN SAID EMULSION, AND SAID IMAGEWISE DISTRIBUTION OF COLOR-PROVIDING SUBSTANCES IS TRANSFERRED BY AN AQUEOUS ALKALINE PROCESSING SOLUTION TO A SUPERPOSED IMAGE-RECEIVING LAYER TO IMPART TO SAID IMAGE-RECEIVING LAYER A COLOR-IMAGE, THE IMPROVEMENT OF HAVING THE COLOR-PROVIDING SUBSTANCE IN A POLYMERIC LAYER BEHIND THE SILVER HALIDE EMULSION LAYER AND DURING PROCESSING, PERMEATING SAID PHOTOSENSITIVE ELEMENT WITH SAID AQUEOUS ALKALINE PROCESSING SOLUTION AND SOLUBILIZING SAID COLOR-PROVIDING SUBSTANCE FROM SAID POLYMERIC LAYER, SAID POLYMERIC LAYER COMPRISING A POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) N-ALKYL-A,B-UNSATURATED CARBOXAMIDE HOMOPOLYMERS, (B) COPOLYMERS OF A FIRST N-ALKYLA,B-UNSATURATED CARBOXAMIDE MONOMER WITH AT LEAST A SECOND N-ALKYL-A,B-UNSATURATED CARBOXAMIDE MONOMER AND (C) COPOLYMERS OF N-ALKYL-A,B-UNSATURATED CARBOXAMIDES WITH N-HYDROXYALKYL-A,B-UNSATURATED CARBOXAMIDES, THE CARBOXAMIDES USED TO PREPARE THE POLYMERS OF SAID POLYMERIC LAYER BEING DERIVATIVES OF A,B-UNSATURATED ALIPHATIC MONOCARBOXYLIC ACIDS COMPRISING LESS THAN SIX CARBON ATOMS AND THE N-ALKYL- AND N-HYDROXYALKYL-SUBSTITUENTS OF SAID CARBOXAMIDES USED TO PREPARE THE POLYMERS IN SAID POLYMERIC LAYER COMPRISING LESS THAN FIVE CARBON ATOMS.
References Cited (Backward Citations)
US2508718A
Cited
US2774668A
Cited
US2831826A
Cited
US2810713A
Cited
US2834676A
Cited
US2892710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |