Patent US3239337A successfully refreshed from Google Patents.
US3239337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic products and processes
Assignee: Polaroid Corp
•
Filing: 1960-11-25
•
Granted: 1966-03-08
•
Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Howard C Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:38
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52; G03C8/56; C; C08; C08F; C08F8/00; C08F8/44; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE IN COLOR, WHEREIN A LATENT IMAGE CONTAINED IN AN EXPOSED SILVER HALIDE EMULSION IS DEVELOPED IN THE PRESENCE OF AN AQUEOUS ALKALINE KPROCESSING SOLUTION COMPRISING A DYE DEVELOPER TO PROVIDE AN IMAGEWISE DISTRIBUTION OF UNOXIDIZED DYE DEVELOPER AND WHEREIN AT LEAST A PORTION OF SAID DISTRIBUTION OF SAID UNOXIDIZED DY DEVELOPER IS TRANSFERRED, BY IMHIBITION, TO AN IMAGE-RECEIVING LAYER IN SUPERPOSED RELATIONSHIP WITH SAID JPHOTOSENSITIVE ELEMENT TO IMPART TO SAID IMAGE-RECEIVING LAYER A TRANSFER IMAGE, THE STEP OF TRANSFERRING SAID IMAGEWISE DISTRIBUTION OF UNOXIDIZED DYE DEVELOPER TO AN IMAGE-RECEIVING LAYER COMPRISING A PARTIAL ACETAL OF POLYVINYL ALCOHOL WITH A TRIALKYLAMMONIUM BENZALDEHYDE QUATERNARY SALT, THE TRIALKYL SUBSTITUENTS OF SAID QUATERNARY SALT COMPRISING TOGETHER NOT MORE THAN 8 CARBON ATOMS.
Claim 2
Dependent Claim
126 words
IN A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE IN COLOR, WHEREIN A LATENT IMAGE CONTAINED IN AN EXPOSED SILVER HALIDE EMULSION IS DEVELOPED IN THE PRESENCE OF AN AQUEOUS ALKALINE KPROCESSING SOLUTION COMPRISING A DYE DEVELOPER TO PROVIDE AN IMAGEWISE DISTRIBUTION OF UNOXIDIZED DYE DEVELOPER AND WHEREIN AT LEAST A PORTION OF SAID DISTRIBUTION OF SAID UNOXIDIZED DY DEVELOPER IS TRANSFERRED, BY IMHIBITION, TO AN IMAGE-RECEIVING LAYER IN SUPERPOSED RELATIONSHIP WITH SAID JPHOTOSENSITIVE ELEMENT TO IMPART TO SAID IMAGE-RECEIVING LAYER A TRANSFER IMAGE, THE STEP OF TRANSFERRING SAID IMAGEWISE DISTRIBUTION OF UNOXIDIZED DYE DEVELOPER TO AN IMAGE-RECEIVING LAYER COMPRISING A PARTIAL ACETAL OF POLYVINYL ALCOHOL WITH A TRIALKYLAMMONIUM BENZALDEHYDE QUATERNARY SALT, THE TRIALKYL SUBSTITUENTS OF SAID QUATERNARY SALT COMPRISING TOGETHER NOT MORE THAN 8 CARBON ATOMS.
References Cited (Backward Citations)
US2358836A
Cited
GB804971A
Cited
US2818403A
Cited
US2997390A
Cited
US3015989A
Cited
US2996956A
Cited
US2983606A
Cited
US2909430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |