Patent US2964401A successfully refreshed from Google Patents.
US2964401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable elements and processes
Assignee: EIDP Inc
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Filing: 1957-02-18
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Granted: 1960-12-13
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Expires: 1977-02-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis Plambeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:27
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; Y10S430/114; Y10S430/117; Y10S430/118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PHOTOPOLYMERIZABLE ELEMENT COMPRISING A SUPPORT AND A SOLID PHOTOSENSITIVE LAYER FROM 8 TO 250 MILS IN THICKNESS COMPRISING (1) A NORMALLY NON-GASEOUS ADDITION-POLYMERIZABLE ETHYLENICALLY UNSATURATED COMPOUND CAPABLE OF FORMING A HIGH POLYMER BY PHOTOINITIATED POLYMERIZATION IN THE PRESENCE OF AN ADDITION POLYMERIZATION INITIATOR THEREFOR ACTIVATABLE BY ACTINIC LIGHT, (2) POLYMERIZATION-EFFECTIVE AMOUNTS OF SUCH AN INITIATOR BEING PRESENT THROUGHOUT SAID LAYER, AND (3) A PREFORMED COMPATIBLE ORGANIC POLYMER, THE UPPER STRATUM OF SAID LAYER BEING AT LEAST 3 MILS THICK AND CONSTITUTING NOT MORE THAN ONE-HALF OF SAID THICKNESS, AND A LOWER STRATUM OF SAID LAYER HAVING A CONCENTRATION OF INITIATOR GREATER THAN ENOUGH TO EFFECT UNIFORM POLYMERIZATION THEREIN AND AT LEAST 1.5 TIMES THAT IN THE UPPER STRATUM, THE CONCENTRATION OF INITIATOR IN THE ELEMENT BEING NOT MORE THAN 35% BY WEIGHT OF SAID COMPOUND.
Claim 2
Dependent Claim
136 words
A PHOTOPOLYMERIZABLE ELEMENT COMPRISING A SUPPORT AND A SOLID PHOTOSENSITIVE LAYER FROM 8 TO 250 MILS IN THICKNESS COMPRISING (1) A NORMALLY NON-GASEOUS ADDITION-POLYMERIZABLE ETHYLENICALLY UNSATURATED COMPOUND CAPABLE OF FORMING A HIGH POLYMER BY PHOTOINITIATED POLYMERIZATION IN THE PRESENCE OF AN ADDITION POLYMERIZATION INITIATOR THEREFOR ACTIVATABLE BY ACTINIC LIGHT, (2) POLYMERIZATION-EFFECTIVE AMOUNTS OF SUCH AN INITIATOR BEING PRESENT THROUGHOUT SAID LAYER, AND (3) A PREFORMED COMPATIBLE ORGANIC POLYMER, THE UPPER STRATUM OF SAID LAYER BEING AT LEAST 3 MILS THICK AND CONSTITUTING NOT MORE THAN ONE-HALF OF SAID THICKNESS, AND A LOWER STRATUM OF SAID LAYER HAVING A CONCENTRATION OF INITIATOR GREATER THAN ENOUGH TO EFFECT UNIFORM POLYMERIZATION THEREIN AND AT LEAST 1.5 TIMES THAT IN THE UPPER STRATUM, THE CONCENTRATION OF INITIATOR IN THE ELEMENT BEING NOT MORE THAN 35% BY WEIGHT OF SAID COMPOUND.
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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |