US2675315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive coating containing a hydrophilic colloid and a polyvinyl chloride dispersion
Assignee: Eastman Kodak Co
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Filing: 1949-12-13
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Granted: 1954-04-13
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Expires: 1969-12-13
Abstract
No abstract record available.
Inventors
- 👤 Henry C Staehle
- 👤 Lawrence E Martinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:02
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/108; Y10S430/109; Y10S430/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A LIGHT-SENSITIVE COATING COMPOSITION COMPRISING A MIXTURE OF A BICHROMATED GELATIN, AN AQUEOUS DISPERSION OF A RESIN SELECTED FROM THE CLASS CONSISTING OF POLYVINYLIDENE CHLORIDE LATEX AND POLYVINYL CHLORIDE-POLYVINYL ACETATE COPOLYMERS, THE RATIO OF SAID GELATIN TO SAID AQUEOUS DISPERSION BEING BETWEEN ABOUT 1 TO 2.5 AND 1 TO 5, SAID COMPOSITION BEING ADAPTED TO PRODUCE A LIGHT-SENSITIVE COATING IN WHICH A REVERSAL IMAGE CAN BE FORMED BY EXPOSURE TO LIGHT AND DEVELOPMENT IN AN AQUEOUS SOLUTION.
Claim 2
Dependent Claim
77 words
A LIGHT-SENSITIVE COATING COMPOSITION COMPRISING A MIXTURE OF A BICHROMATED GELATIN, AN AQUEOUS DISPERSION OF A RESIN SELECTED FROM THE CLASS CONSISTING OF POLYVINYLIDENE CHLORIDE LATEX AND POLYVINYL CHLORIDE-POLYVINYL ACETATE COPOLYMERS, THE RATIO OF SAID GELATIN TO SAID AQUEOUS DISPERSION BEING BETWEEN ABOUT 1 TO 2.5 AND 1 TO 5, SAID COMPOSITION BEING ADAPTED TO PRODUCE A LIGHT-SENSITIVE COATING IN WHICH A REVERSAL IMAGE CAN BE FORMED BY EXPOSURE TO LIGHT AND DEVELOPMENT IN AN AQUEOUS SOLUTION.
References Cited (Backward Citations)
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Cited
US2016490A
Cited
US1981102A
Cited
US2099297A
Cited
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Cited
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Cited
US2500028A
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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) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |