US2596756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photomechanical copy method
Assignee: Eastman Kodak Co
•
Filing: 1947-11-04
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Granted: 1952-05-13
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Expires: 1967-11-04
Abstract
No abstract record available.
Inventors
- 👤 Henry C Yutzy
- 👤 Edward C Yackel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:33
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; G03B; G03B15/00; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/315; Y; Y10; Y10S; Y10S101/00; Y10S101/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF PHOTOGRAPHIC REPRODUCTION WHICH COMPRISES FORMING BY EXPOSURE TO A TWOTONE SUBJECT AND DEVELOPMENT IN A LIGHT-SENSITIVE SUBSTANTIALLY UNHARDENED ORGANIC COLLOIDSILVER HALIDE EMULSION LAYER, A HARDENED COLLOID IMAGE AND LEAVING SUBSTANTIALLY UNHARDENED COLLOID IN THE REMAINING AREA OF SAID LAYER, SAID UNHARDENED LAYER BEING NOT HARDER THAN A GELATIN LAYER CONTAINING 0.7 GRAM OF FORMALDEHYDE PER POUND OF GELATIN FRESHLY COATED, REMOVING EXCESS WATER FROM THE SURFACE OF SAID EMULSION LAYER, PRESSING A SHEET HAVING AN ABSORBENT SURFACE AGAINST SAID EMULSION LAYER WHILE SAID EMULSION IS MOIST AND ITS SURFACE FREE OF GREASY MATERIAL, TO CAUSE ONLY SAID UNHARDENED COLLOID PORTION OF SAID LAYER TO ADHERE TO SAID SHEET, AND SEPARATING SAID SHEET AND SAID EMULSION LAYER TO TRANSFER ONLY A STRATUM OF THE UNHARDENED COLLOID PORTION OF SAID LAYER TO SAID SHEET.
Claim 2
Independent Claim
135 words
A METHOD OF PHOTOGRAPHIC REPRODUCTION WHICH COMPRISES FORMING BY EXPOSURE TO A TWOTONE SUBJECT AND DEVELOPMENT IN A LIGHT-SENSITIVE SUBSTANTIALLY UNHARDENED ORGANIC COLLOIDSILVER HALIDE EMULSION LAYER, A HARDENED COLLOID IMAGE AND LEAVING SUBSTANTIALLY UNHARDENED COLLOID IN THE REMAINING AREA OF SAID LAYER, SAID UNHARDENED LAYER BEING NOT HARDER THAN A GELATIN LAYER CONTAINING 0.7 GRAM OF FORMALDEHYDE PER POUND OF GELATIN FRESHLY COATED, REMOVING EXCESS WATER FROM THE SURFACE OF SAID EMULSION LAYER, PRESSING A SHEET HAVING AN ABSORBENT SURFACE AGAINST SAID EMULSION LAYER WHILE SAID EMULSION IS MOIST AND ITS SURFACE FREE OF GREASY MATERIAL, TO CAUSE ONLY SAID UNHARDENED COLLOID PORTION OF SAID LAYER TO ADHERE TO SAID SHEET, AND SEPARATING SAID SHEET AND SAID EMULSION LAYER TO TRANSFER ONLY A STRATUM OF THE UNHARDENED COLLOID PORTION OF SAID LAYER TO SAID SHEET.
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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) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |