Patent US3224877A successfully refreshed from Google Patents.
US3224877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid latensification of silver halide photographic materials
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1962-10-26
•
Granted: 1965-12-21
•
Expires: 1982-10-26
Abstract
No abstract record available.
Inventors
- 👤 John H Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:43
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/49; G03C5/00; G03C5/26; G03C5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD FOR INCREASING THE WRITING SPEED OF A SILVER HALIDE DEVELOP-OUT EMULSION OF THE RECORDING TYPE WHICH IS BLUE SENSITIVE TO FOGGING AND ON WHICH INFORMATION HAS BEEN INVISIBLY ARECORDED BY EXPOSURE TO ELECTROMAGNETIC RADIATIONS, COMPRISING THE STEPS OF HEATING THE EMULSION TO A TEMPERATURE WHICH INACTIVATES ITS BLUE SENSITIVITY TO FOGGING, SUBSTANTIALLY IMMEDIATELY THEREAFTER EXPOSING THE EMULSION TO RADIATIONS HAVING WAVE LENGTHS WITHIN THE BLUE SENSITIVITY TO FOGGING RANGE OF THE EMULSION, THE RADIATIONS BEING LIMITED TO SUCH A DURATION AND INTENSITY AS ONLY INVISIBLY FOG THE EMULSION WHEN SO EXPOSED AT A TEMPERATURE OF ABOUT 75 DEGREES FAHRENHEIT AND THEREAFTER SUBJECTING THE EMULSION TO DEVELOPMENT PROCESSING.
Claim 2
Independent Claim
109 words
A METHOD FOR INCREASING THE WRITING SPEED OF A SILVER HALIDE DEVELOP-OUT EMULSION OF THE RECORDING TYPE WHICH IS BLUE SENSITIVE TO FOGGING AND ON WHICH INFORMATION HAS BEEN INVISIBLY ARECORDED BY EXPOSURE TO ELECTROMAGNETIC RADIATIONS, COMPRISING THE STEPS OF HEATING THE EMULSION TO A TEMPERATURE WHICH INACTIVATES ITS BLUE SENSITIVITY TO FOGGING, SUBSTANTIALLY IMMEDIATELY THEREAFTER EXPOSING THE EMULSION TO RADIATIONS HAVING WAVE LENGTHS WITHIN THE BLUE SENSITIVITY TO FOGGING RANGE OF THE EMULSION, THE RADIATIONS BEING LIMITED TO SUCH A DURATION AND INTENSITY AS ONLY INVISIBLY FOG THE EMULSION WHEN SO EXPOSED AT A TEMPERATURE OF ABOUT 75 DEGREES FAHRENHEIT AND THEREAFTER SUBJECTING THE EMULSION TO DEVELOPMENT PROCESSING.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |