Patent US2993789A successfully refreshed from Google Patents.
US2993789A
Expired / Lapsed
US
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Photopolymerizable elements, their preparation and use
Assignee: EIDP Inc
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Filing: 1960-03-25
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Granted: 1961-07-25
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Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 Crawford Harry Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:34
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/095; G03F7/0955; C; C08; C08F; C08F2/00; C08F2/46; C08F291/00; C08F291/18; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/114; Y10S430/118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A PHOTOPOLYMERIZABLE ELEMENT COMPRISING A SUPPORT AND A SOLID PHOTOPOLYMERIZABLE LAYER FROM 5 TO 250 MILS IN THICKNESS COMPRISING (1) A NON-GASEOUS, ADDITION POLYMERIZABLE ETHYLENICALLY UNSATURATED COMPOUND CAPABLE OF FORMING A HIGH POLYMER BY PHOTOINITIATED ADDITION POLYMERIZATION IN THE PRESENCE OF AN ADDITION POLYMERIZATION INITIATOR THEREFOR ACTIVATABLE BY ACTINIC RADIATION, (2) A PREFORMED COMPATIBLE MACROMOLECULAR POLYMER, (3) ABOUT 0.001% TO ABOUT 35% BY WEIGHT OF SUCH AN INITIATOR BASED ON THE WEIGHT OF SAID UNSATURATED COMPOUND, AND (4) FROM 30 TO 150,000 PARTS BY WEIGHT PER MILLION PARTS BY WEIGHT OF SAID UNSATURATED COMPOUND OF AN INHIBITOR OF THERMAL ADDITION POLYMERIZATION, THE UPPER STRATUM OF SAID PHOTOPOLYMERIZABLE LAYER BEING AT LEAST 2.5 MILS IN THICKNESS AND CONSTITUTING NOT MORE THAN ONEHALF OF THE THICKNESS OF THE PHOTOPOLYMERIZABLE LAYER AND CONTAINING AT LEAST 1.5 TIMES THE AMOUNT OF INHIBITOR IN THE LOWER STRATUM OF SAID LAYER.
Claim 2
Dependent Claim
145 words
A PHOTOPOLYMERIZABLE ELEMENT COMPRISING A SUPPORT AND A SOLID PHOTOPOLYMERIZABLE LAYER FROM 5 TO 250 MILS IN THICKNESS COMPRISING (1) A NON-GASEOUS, ADDITION POLYMERIZABLE ETHYLENICALLY UNSATURATED COMPOUND CAPABLE OF FORMING A HIGH POLYMER BY PHOTOINITIATED ADDITION POLYMERIZATION IN THE PRESENCE OF AN ADDITION POLYMERIZATION INITIATOR THEREFOR ACTIVATABLE BY ACTINIC RADIATION, (2) A PREFORMED COMPATIBLE MACROMOLECULAR POLYMER, (3) ABOUT 0.001% TO ABOUT 35% BY WEIGHT OF SUCH AN INITIATOR BASED ON THE WEIGHT OF SAID UNSATURATED COMPOUND, AND (4) FROM 30 TO 150,000 PARTS BY WEIGHT PER MILLION PARTS BY WEIGHT OF SAID UNSATURATED COMPOUND OF AN INHIBITOR OF THERMAL ADDITION POLYMERIZATION, THE UPPER STRATUM OF SAID PHOTOPOLYMERIZABLE LAYER BEING AT LEAST 2.5 MILS IN THICKNESS AND CONSTITUTING NOT MORE THAN ONEHALF OF THE THICKNESS OF THE PHOTOPOLYMERIZABLE LAYER AND CONTAINING AT LEAST 1.5 TIMES THE AMOUNT OF INHIBITOR IN THE LOWER STRATUM OF SAID LAYER.
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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |