US3113866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic processes and compositions useful therein
Assignee: Polaroid Corp
•
Filing: 1957-01-22
•
Granted: 1963-12-10
•
Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:59
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/261; G03C1/00; G03C1/52; G03C8/00; G03C8/02; G03C8/04; G03C8/06; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PHOTOGRAPHIC PROCESS FOR WASHING AND PROTECTING A PHOTOGRAPHIC SILVER IMAGE HAVING THEREIN A RESIDUE OF THE WATER-SOLUBLE PROCESSING AGENTS BY WHICH IT WAS FORMED, SAID PROCESS COMPRISING THE STEPS (1) OF APPLYING TO SAID IMAGE AN EMULSION, INCLUDING A DISCONTINUOUS LIQUID PHASE AND A CONTINUOUS LIQUID PHASE, SAID DISCONTINUOUS PHASE BEING AQUEOUS, SAID CONTINUOUS PHASE CONTAINING A HYDROPHOBIC ORGANIC LIQUID SOLUTION OF A HYDROPHOBIC PLASTIC MATERIAL, IN ORDER TO WASH SAID RESIDUE FROM SAID IMAGE INTO SAID DISCONTINUOUS PHASE AND TO FORM AN EMULSION LAYER ON SAID IMAGE, AND (2) OF DRYING SAID EMULSION LAYER IN ORDER TO FORM A SUBSTANTIALLY WATER-IMPERMEABLE PROTECTIVE COATING FOR SAID IMAGE.
Claim 2
Dependent Claim
108 words
A PHOTOGRAPHIC PROCESS FOR WASHING AND PROTECTING A PHOTOGRAPHIC SILVER IMAGE HAVING THEREIN A RESIDUE OF THE WATER-SOLUBLE PROCESSING AGENTS BY WHICH IT WAS FORMED, SAID PROCESS COMPRISING THE STEPS (1) OF APPLYING TO SAID IMAGE AN EMULSION, INCLUDING A DISCONTINUOUS LIQUID PHASE AND A CONTINUOUS LIQUID PHASE, SAID DISCONTINUOUS PHASE BEING AQUEOUS, SAID CONTINUOUS PHASE CONTAINING A HYDROPHOBIC ORGANIC LIQUID SOLUTION OF A HYDROPHOBIC PLASTIC MATERIAL, IN ORDER TO WASH SAID RESIDUE FROM SAID IMAGE INTO SAID DISCONTINUOUS PHASE AND TO FORM AN EMULSION LAYER ON SAID IMAGE, AND (2) OF DRYING SAID EMULSION LAYER IN ORDER TO FORM A SUBSTANTIALLY WATER-IMPERMEABLE PROTECTIVE COATING FOR SAID IMAGE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |