Patent US3314792A successfully refreshed from Google Patents.
US3314792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film assemblage including processing liquid
Assignee: Polaroid Corp
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Filing: 1965-10-21
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Granted: 1967-04-18
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:14
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/34; G03B; G03B17/00; G03B17/28; G03B17/30; G03B17/48; G03B17/50; G03B17/52; G03C8/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
283 words
AN EXTERNALLY DRY PHOTOGRAPHIC FILM ASEMBLAGE FOR TREATING SUCCESSIVE EXPOSED AREAS OF A HOTOTSENSITIVE IMAGE-RECORDING SHEET WITH AN AQUEOUS ALKALINE LIQUID HAVING A HIGH PH TO PRODUCE A SUCCESSION OF PHOTOGRAPHIC TRANSFER PRINTS, SAID ASSEMBLAGE COMPRISING, IN COMBINATION: AN IMAGE-RECORDING SHEET INCLUDING A PHOTOSENSITIVE HEAVY METAL SALT CAPABLE OF FORMING A LATENT IMAGE UPON PHOTOEXPOSURE AND A DEVELOPING AGENT IN SUBSTANTIALLY DRY FORM CAPABLE OF REDUCING EXPOSED PORTIONS OF SAID HEAVY METAL SALT; A SUBSTANTIALLY GAS AND WATER IMPERMEABLE CONTAINER HAVING A NARROW OPENING THEREIN THROUGH WHICH A SHEET IS MOVABLE; AN ELONGETED IMAGE-RECEIVING SHEET COILED WITHIN SAID CONTAINER WITH AN END PORTION OF SAID IMAGE-RECEIVING SHEET EXTENDING FROM SAID CONTAINER THROUGH SAID OPENING; SAID IMAGE-RECEIVING SHEET COMPRISING A SUPPORT AND AN IMAGE-RECEIVING LAYER CARRIED ON SAID SUPPORT AND IMPREGNATED WITH AN AQUEOUS ALKALINE LIQUID HAVING A HIGH PH, SAID LIQUID BEING DISTRIBUTED WITHIN SAID IMAGE-RECEIVING LAYER IN SUFFICIENT QUANTITY TO RENDER SAID DEVELOPING AGENT REACTIVE WHEN SAID IMAGE-RECEIVING LAYER IS PRESSED IN FACE-TO-FACE CONTACT WITH SAID IMAGE-RECORDING SHEET; SAID END PORTION OF SAID IMAGE-RECEIVING LAYER BEING COUPLED OUTSIDE OF SAID CONTAINER WITH THE LEADING END OF SAID IMAGE-RECORDING SHEET WITH SAID IMAGERECEIVING LAYER FACING SAID IMAGE-RECORDING SHEET; CLOSURE MEANS COMPRISING PORTIONS OF SAID CONTAINER FOR ENGAGING SAID IMAGE-RECEIVING SHEET AT SAID OPENING TO SUBSTANTIALLY SEAL SAID OPENING AGAINST ADMISSION OF CARBON DIOXIDE TO SAID CONTAINER, SAID CLOSURE MEANS BEING MOVABLE TO AN OPEN POSITION TO PERMIT WITHDRAWAL MOVEMENT OF SAID IMAGE-RECEIVING SHEET FROM SAID CONTAINER THROUGH SAID OPENING; AND A SQUEEGEE WITHIN SAID CONTAINER ADJACENT SAID OPENING FOR ENGAGING SAID IMAGE-RECEIVING SHEET WITHIN SAID CONTAINER DURING WITHDRAWAL MOVEMENT OF SAID IMAGE-RECEIVING SHEET TO REMOVE SAID LIQUID FROM AT LEAST ONE SURFACE THEREOF.
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |