Patent US2879048A successfully refreshed from Google Patents.
Patent US3052541A successfully refreshed from Google Patents.
US3052541A
Expired / Lapsed
US
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Photographic reproduction process and apparatus therefor
Assignee: GAF Chemicals Corp
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Filing: 1959-01-14
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Granted: 1962-09-04
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Expires: 1979-01-14
Abstract
No abstract record available.
Inventors
- 👤 Levinos Steven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:01
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/06; G03D5/067; G03B; G03B17/00; G03B17/48; G03B17/50; G03C; G03C1/00; G03C1/705
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
A PROCESS OF PHOTOGRAPHIC REPRODUCTION UTILIZING A COMPRISING A PHOTOGRAPHICALLY INERT AMPHOTERIC METAL COMPRISING A PHOTOGRAPHICALLY INERT AMPHOTERIC METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM DIOXIDE AND ZINC OXIDE WHICH COMPRISES PLACING SAID MATERIAL, PRIOR TO SENSITIZATION AND EXPOSURE, IN A LIGHT-TIGHT ENCLOSURE AND APPLYING AS THE SOLE ACTIVATING AGENT TO SAID COATING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE SILVER SALT AN ACTINIC REACTION PRODUCT, EXPOSING SAID ACTIVATED COATING WHILE IN A MOIST STATE TO LIGHT THROUG HA TRANSLUCENT ORIGINAL TO BE REPRODUCED, THEREBY PRODUCING A PRINT-OUT IMAGE AND FIXING THE IMAGE BY EVAPORATING WATER FROM THE MOIST SURFACE, THUS RENDERING SAID COATING PHOTOGRAPHICALLY INSENSITIVE TO LIGHT PRIOR TO LEAVING SAID ENGRAPHICALLY INSENSITIVE TO LIGHT PRIOR TO LEAVIGN SAID EN
Claim 2
Dependent Claim
122 words
A PROCESS OF PHOTOGRAPHIC REPRODUCTION UTILIZING A COMPRISING A PHOTOGRAPHICALLY INERT AMPHOTERIC METAL COMPRISING A PHOTOGRAPHICALLY INERT AMPHOTERIC METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM DIOXIDE AND ZINC OXIDE WHICH COMPRISES PLACING SAID MATERIAL, PRIOR TO SENSITIZATION AND EXPOSURE, IN A LIGHT-TIGHT ENCLOSURE AND APPLYING AS THE SOLE ACTIVATING AGENT TO SAID COATING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE SILVER SALT AN ACTINIC REACTION PRODUCT, EXPOSING SAID ACTIVATED COATING WHILE IN A MOIST STATE TO LIGHT THROUG HA TRANSLUCENT ORIGINAL TO BE REPRODUCED, THEREBY PRODUCING A PRINT-OUT IMAGE AND FIXING THE IMAGE BY EVAPORATING WATER FROM THE MOIST SURFACE, THUS RENDERING SAID COATING PHOTOGRAPHICALLY INSENSITIVE TO LIGHT PRIOR TO LEAVING SAID ENGRAPHICALLY INSENSITIVE TO LIGHT PRIOR TO LEAVIGN SAID EN
Claim 3
Dependent Claim
31 words
A PROCESS IN ACCORDANCE WITH CLAIM 1 WHEREIN SAID COATING COMPRISES A MIXTURE OF ZINC OXIDE AND AN OXIDIZABLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM FORMATE AND SODIUM OXALATE.
References Cited (Backward Citations)
US1503595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |