Patent US4234365A successfully refreshed from Google Patents.
US3110593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature clayden prescreening
Assignee: Eastman Kodak Co
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Filing: 1960-11-14
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Granted: 1963-11-12
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 John A C Yule
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
G; G03; G03F; G03F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF MAKING A HALFTONE SENSITIVE MATERIAL WHICH COMPRISES COOLING TO A TEMPERATURE BELOW -10*C. A PHOTOSENSITIVE SILVER HALIDE EMULSION LAYER OF THE TYPE WHICH AT 20*C. TGEMPERATURE SHOWS AT LEAST 0.3 LOG E UNITS CLAYDEN EFFECT TOGHITH INTENSITY EXPOSURES OF 0.001 SECOND, EXPOSING SAID LAYER AT SAID LOWER TEMPERATURE THROUGH A HALFTONE SCREEN TO A HIGH TENSITY, SHORT DURATION, UNIFORM EXPOSURE OF SUFFICIENT INTENSITY AND SUFFICIENTLY SHORT DURATION TO PRODUCE A CLAYDEN DESENSITIZATION OF AT LEAST 0.6 LOG E UNITS, THE ILLUMINATION AT THE EMULSION BEING DISTRIBUTED IN AN UNDULATING HALFTONE PATTER.
Claim 2
Independent Claim
94 words
THE METHOD OF MAKING A HALFTONE SENSITIVE MATERIAL WHICH COMPRISES COOLING TO A TEMPERATURE BELOW -10*C. A PHOTOSENSITIVE SILVER HALIDE EMULSION LAYER OF THE TYPE WHICH AT 20*C. TGEMPERATURE SHOWS AT LEAST 0.3 LOG E UNITS CLAYDEN EFFECT TOGHITH INTENSITY EXPOSURES OF 0.001 SECOND, EXPOSING SAID LAYER AT SAID LOWER TEMPERATURE THROUGH A HALFTONE SCREEN TO A HIGH TENSITY, SHORT DURATION, UNIFORM EXPOSURE OF SUFFICIENT INTENSITY AND SUFFICIENTLY SHORT DURATION TO PRODUCE A CLAYDEN DESENSITIZATION OF AT LEAST 0.6 LOG E UNITS, THE ILLUMINATION AT THE EMULSION BEING DISTRIBUTED IN AN UNDULATING HALFTONE PATTER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |