US3369901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating method for wash-off solvent transfer
Assignee: Eastman Kodak Co
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Filing: 1964-01-16
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Granted: 1968-02-20
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Expires: 1984-01-16
Abstract
No abstract record available.
Inventors
- 👤 David B Fogg
- 👤 Jr Albert C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:00
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/04; G03C8/06; Y; Y10; Y10S; Y10S430/00; Y10S430/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD OF PREPARING A PRODUCT USEFUL IN WASH-OFF SOLVENT TRANSFER SYSTEMS WHICH COMPRISES SIMULTANEOUSLY APPLYING TO A PAPER SUPPORT A POLYMERIC HYDROSOL WHICH COALESCES ON LOSS OF WATER TO FORM A WATER-RESISTANT LAYER, A NUCLEATING MATERIAL AND A HARDENER FREE GELATIN-SILVER HALIDE PHOTOGRAPHIC EMULSION CONTAINING A MATERIAL WHICH WILL FACILITATE ITS REMOVAL BY THE WASH-OFF SOLVENT IN WHICH EACH OF THE COMPOSITIONS ARE FED AS LAYERS INTO A BEAD IN SUPERPOSED RELATION AND ONTO THE SURFACE OF THE PAPER IN THE ORDER GIVEN, THE PHOTOGRAPHIC EMULSION COMPOSITION BEING CHARACTERIZED BY A LOWER SURFACE TENSION THAN THE COMPOSITIONS EMPLOYED FOR THE UNDERLAYERS.
Claim 2
Independent Claim
102 words
A METHOD OF PREPARING A PRODUCT USEFUL IN WASH-OFF SOLVENT TRANSFER SYSTEMS WHICH COMPRISES SIMULTANEOUSLY APPLYING TO A PAPER SUPPORT A POLYMERIC HYDROSOL WHICH COALESCES ON LOSS OF WATER TO FORM A WATER-RESISTANT LAYER, A NUCLEATING MATERIAL AND A HARDENER FREE GELATIN-SILVER HALIDE PHOTOGRAPHIC EMULSION CONTAINING A MATERIAL WHICH WILL FACILITATE ITS REMOVAL BY THE WASH-OFF SOLVENT IN WHICH EACH OF THE COMPOSITIONS ARE FED AS LAYERS INTO A BEAD IN SUPERPOSED RELATION AND ONTO THE SURFACE OF THE PAPER IN THE ORDER GIVEN, THE PHOTOGRAPHIC EMULSION COMPOSITION BEING CHARACTERIZED BY A LOWER SURFACE TENSION THAN THE COMPOSITIONS EMPLOYED FOR THE UNDERLAYERS.
References Cited (Backward Citations)
US3043691A
Cited
US3021214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |