US3043692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic products and processes
Assignee: Polaroid Corp
•
Filing: 1958-12-17
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Granted: 1962-07-10
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Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 Howard C Haas
- 👤 Howard G Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:18
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; Y; Y10; Y10S; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PHOSTOSENSITIVE ELEMENT FOR DIFFUSION TRANSFER COLOR PROCESSES, SAID ELEMENT COMPRISING A SUPPORT, A POLYMERIC LAYER HAVING A COLOR-PROVIDING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF FYES AND DYE INTERMEDIATES DISPOSED THEREIN AND A SILVER HALIDE EMULSION LAYER, SAID POLYMERIC LAYER COMPRISING A POLYMER PREPARED BY ACETALIZING A PORTION OF THE HYDROXY GROUPS OF POLYVINYL ALCOHOL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORTHO-, META- AND PARA-BENZEALDEHYDE SULFONIC ACIDS AND THE ESTERIFYING THE RESULTING PARTIAL ACETAL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORTHOMETA-AND PARA-ACYLAMIDOBENZENE SULFONYL CHLORIDES THE ACYL GROUP OF SAID CHLORIDES COMPRISING LESS THAN 4 CARBON ATOMS.
Claim 2
Dependent Claim
103 words
A PHOSTOSENSITIVE ELEMENT FOR DIFFUSION TRANSFER COLOR PROCESSES, SAID ELEMENT COMPRISING A SUPPORT, A POLYMERIC LAYER HAVING A COLOR-PROVIDING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF FYES AND DYE INTERMEDIATES DISPOSED THEREIN AND A SILVER HALIDE EMULSION LAYER, SAID POLYMERIC LAYER COMPRISING A POLYMER PREPARED BY ACETALIZING A PORTION OF THE HYDROXY GROUPS OF POLYVINYL ALCOHOL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORTHO-, META- AND PARA-BENZEALDEHYDE SULFONIC ACIDS AND THE ESTERIFYING THE RESULTING PARTIAL ACETAL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORTHOMETA-AND PARA-ACYLAMIDOBENZENE SULFONYL CHLORIDES THE ACYL GROUP OF SAID CHLORIDES COMPRISING LESS THAN 4 CARBON ATOMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |