US2973262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive photographic paper
Assignee: Gevaert Photo Producten NV
•
Filing: 1957-06-18
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Granted: 1961-02-28
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Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Albert Emiel Van Hoof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:09
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; Y; Y10; Y10S; Y10S430/00; Y10S430/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
HIGH GLOSS PHOTOGRAPHIC LIGHT-SENSITIVE PAPER COMPRISING A PAPER SUPPORT, A BARYTA COATING ON SAID SUPPORT, A SEPARATE COATING COMPRISING ESSENTIALLY COLLOIDAL SILICA, AN ADDITIVE SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE PLASTICIZERS AND GELATIN, SAID ADDITIVE NOT EXCEEDING THE AMOUNT OF SAID SILICA, SUPERPOSED DIRECTLY ON SAID BARYTA COATING, AND A SEPARATE LIGHT-SENSITIVE SILVER HALIDE EMULSION COATING SUPERPOSED DIRECTLY ON SAID SILICA COATING, THE SILICA COATED PAPER HAVING A HIGHER GLOSS THAN A SIMILARLY COATED PAPER WITHOUT A SILICA COATING, THE FINAL GLOSS BEING UNDIMINISHED BY MOISTENING.
Claim 2
Dependent Claim
87 words
HIGH GLOSS PHOTOGRAPHIC LIGHT-SENSITIVE PAPER COMPRISING A PAPER SUPPORT, A BARYTA COATING ON SAID SUPPORT, A SEPARATE COATING COMPRISING ESSENTIALLY COLLOIDAL SILICA, AN ADDITIVE SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE PLASTICIZERS AND GELATIN, SAID ADDITIVE NOT EXCEEDING THE AMOUNT OF SAID SILICA, SUPERPOSED DIRECTLY ON SAID BARYTA COATING, AND A SEPARATE LIGHT-SENSITIVE SILVER HALIDE EMULSION COATING SUPERPOSED DIRECTLY ON SAID SILICA COATING, THE SILICA COATED PAPER HAVING A HIGHER GLOSS THAN A SIMILARLY COATED PAPER WITHOUT A SILICA COATING, THE FINAL GLOSS BEING UNDIMINISHED BY MOISTENING.
References Cited (Backward Citations)
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US2433515A
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US2626867A
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US2759825A
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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) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |