Patent US3061453A successfully refreshed from Google Patents.
US3061453A
Expired / Lapsed
US
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Process for incorporating photographic reagents in a photographic element using a common solvent and a preferential solvent
Assignee: Polaroid Corp
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Filing: 1959-08-03
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Granted: 1962-10-30
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Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Howard G Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:52
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR INCORPORATING ORGANIC-SOLUBLE, WATERINSOLUBLE PHOTOGRAPHIC REAGENTS IN LAMINATED PHOTOGRAPHIC ELEMENTS FROM AQUEOUS COATING SOLUTIONS, SAID PROCESS COMPRISING DISSOLVING SAID REAGENTS AND AT LEAST ONE ORGANIC-SOLUBLE, WATER-SOLUBLE POLYMERIC FILM-FORMING MATERIAL IN A COMMON ORGANIC SOLVENT, EVAPORATING OFF THE ORGANIC SOLVENT, DISSOLVING THE RESULTING FILM IN WATER, AND COATING THE RESULTING SOLUTION ON A STRATUM OF THE LAMINATED PHOTOGRAPHIC ELEMENT WHICH IS TO BE FORMED.
Claim 2
Dependent Claim
65 words
A PROCESS FOR INCORPORATING ORGANIC-SOLUBLE, WATERINSOLUBLE PHOTOGRAPHIC REAGENTS IN LAMINATED PHOTOGRAPHIC ELEMENTS FROM AQUEOUS COATING SOLUTIONS, SAID PROCESS COMPRISING DISSOLVING SAID REAGENTS AND AT LEAST ONE ORGANIC-SOLUBLE, WATER-SOLUBLE POLYMERIC FILM-FORMING MATERIAL IN A COMMON ORGANIC SOLVENT, EVAPORATING OFF THE ORGANIC SOLVENT, DISSOLVING THE RESULTING FILM IN WATER, AND COATING THE RESULTING SOLUTION ON A STRATUM OF THE LAMINATED PHOTOGRAPHIC ELEMENT WHICH IS TO BE FORMED.
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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |