US3682638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiosensitive film
Assignee: Individual
•
Filing: 1970-12-03
•
Granted: 1972-08-08
•
Expires: 1990-12-03
Abstract
Abstract A FILM HAVING BOTH DEVELOPING AND FIXING COMPONENTS CONTAINED WITHIN THE WATER SOLUBLE GELATINOUS, COLLAGENIC OR CELLULOSE LAYERS OF THE FILM. UPON EXPOSURE, THE FILM IS PROCESSED MERELY BY CONTACTING IT WITH WATER FOR A FEW SECONDS. THE FILM OF THIS INVENTION ELIMINATES THE REQUIREMENT FOR DEVELOPING BY IMMERSION IN AN AQUEOUS ALKALINE SOLUTION AND FIXING BY IMMERSION IN AN AQUEOUS ACIDIC SOLUTION.
Inventors
- 👤 Carl M Kosti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:37
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/42; G03C5/00; G03C5/16; Y; Y10; Y10S; Y10S430/00; Y10S430/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |