Patent US3816054A successfully refreshed from Google Patents.
US3259494A
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US
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Exposure, heat development and fixing of photosensitive mercurous oxalate and silvercompositions
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1962-04-05
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Granted: 1966-07-05
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Expires: 1982-04-05
Abstract
No abstract record available.
Inventors
- 👤 Herbert N Schlein
- 👤 Paul T Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:07
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/725; G03C1/7256; G03C1/494; G03C1/498; G03C5/00; G03C5/26; G03C5/263
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
IN A PROCESS FOR RECORDING DATA IN A PHOTOTHERMOGRAPHIC MEDIUM WHICH CCOMPRISES A THERMALLY RESPONSIVE IMAGE FORMING SYSTEM COMPRISING A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF MERCUROUS OXALATE, SILVER OXALATE AND MIXTURES THEREOF, SAID PROCESS INCLUDING THE STEPS OF; (A) FORMING A LATENT IMAGE IN SAID MEDIUM BY EXPOSURE OF SAID MEDIUM TO A SOURCE OF LIGHT MODIFIED BY THE DATA TO BE RECORDED THEREIN, AND (B) DEVELOPING SAID IMAGE BY HEAT, THE IMPROVEMENT WHICH COMPRISES, MAINTAINING SAID MEDIUM AT AN ELEVATED TEMPERATURE WHICH IS BELOW THAT AT WHICH DEVELOPMENT OCCURS SIMULTANEOUS WITH SAID EXPOSURE OF SAID MEDIUM TO SAID LIGHT SOURCE.
Claim 2
Dependent Claim
103 words
IN A PROCESS FOR RECORDING DATA IN A PHOTOTHERMOGRAPHIC MEDIUM WHICH CCOMPRISES A THERMALLY RESPONSIVE IMAGE FORMING SYSTEM COMPRISING A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF MERCUROUS OXALATE, SILVER OXALATE AND MIXTURES THEREOF, SAID PROCESS INCLUDING THE STEPS OF; (A) FORMING A LATENT IMAGE IN SAID MEDIUM BY EXPOSURE OF SAID MEDIUM TO A SOURCE OF LIGHT MODIFIED BY THE DATA TO BE RECORDED THEREIN, AND (B) DEVELOPING SAID IMAGE BY HEAT, THE IMPROVEMENT WHICH COMPRISES, MAINTAINING SAID MEDIUM AT AN ELEVATED TEMPERATURE WHICH IS BELOW THAT AT WHICH DEVELOPMENT OCCURS SIMULTANEOUS WITH SAID EXPOSURE OF SAID MEDIUM TO SAID LIGHT SOURCE.
Claim 3
Dependent Claim
18 words
THE PROCESS OF CLAIM 1 INCLUDING THE FURRTHER STEP OF FIXING THE DEVELOPED IMAGE TO STABILIZED SAID IMATE.
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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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |