US2980534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic compositions and photographic elements
Assignee: Monsanto Chemicals Ltd
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Filing: 1956-12-17
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Granted: 1961-04-18
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 John O Printy
- 👤 Wagner Edward Wangelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:23
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; C; C08; C08F; C08F22/00; C08F8/00; C08F8/12; C08F8/14; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03F7/016; G03F7/021; G03F7/0212; G03F7/038; G03F7/0388; C08F2800/00; C08F2800/10; C08F2810/00; C08F2810/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
THE METHOD OF FORMING A RELIEF IMAGE WHICH COMPRISES: (1) PREPARING A COATED SURFACE BY COATING A SURFACE WITH A PHOTOGRAPHIC COMPOSITION CONSISTING ESSENTIALLY OF A PHOTOSENSITIVE MATERIAL INCORPORATED IN A WATERINSOLUBLE RESINOUS COPOLYMER, (2) EXPOSING THE COATED SURFACE TO LIGHT WITH A REPLICA OF THE RELIEF IMAGE INTERPOSED BETWEEN THE LIGHT SOURCE AND THE COATED SURFACE, AND (3) TREATING THE COATED SURFACE WITH A SOLUTION TO REMOVE THE COATING COMPOSITION FROM THE UNEXPOSED AREA; SAID PHOTOSENSITIVE MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF LIGHT-SENSITIVE DICHROMATE AND LIGHT-SENSITIVE DIAZO COMPOUNDS; SAID RESINOUS COPOLYMER CONTAINING IN ITS FORMULA BOTH (A) POLYMERIZED OLEFINIC HYDROCARBON GROUPS, AND (B) AT LEAST ONE POLYMERIZED MONOMER GROUP HAVING A FORMULA OF THE GROUP CONSISTING OF:
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |