US3615567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive elements containing inorgainc halide image intensifiers
Assignee: EIDP Inc
•
Filing: 1969-08-20
•
Granted: 1971-10-26
•
Expires: 1989-08-20
Abstract
Abstract A light-hardenable element comprising a preformed, compatible, coherent, film-forming macromolecular organic polymer, a free radical-producing hydrogen donor agent, an imidazolyl dimer and, optionally, a macromolecular organic polymer protective layer; and in intimate association therewith, a halide selected from the group consisting of ammonium, barium, calcium, magnesium aluminum, mercuric, zinc, cobaltous, cuprous, and ferric chlorides; magnesium bromide and aluminum iodide are capable of producing enhanced visible images upon photolysis.
Inventors
- 👤 Howard Ivan Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:12
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/09; G03F7/105; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/116; Y10S430/118; Y10S430/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
25 words
An element according to claim 1, having in contact with the outer surface of said stratum a protective layer of a macromolecular, film-forming organic polymer.
Claim 2
Dependent Claim
13 words
An element according to claim 1, wherein said halide is in the stratum.
Claim 3
Dependent Claim
24 words
An element according to claim 1, having in contact with the outer surface of the stratum a protective layer of a water-permeable protective colloid.
Claim 4
Dependent Claim
23 words
An element according to claim 1, wherein said halide is in a protective layer of a macromolecular, film-forming organic polymer on said stratum.
Claim 5
Dependent Claim
38 words
An element according to claim 1, wherein said photosensitive layer is addition photopolymerizable and further comprises d. at least one nongaseous, ethylenically unsaturated compound capable of forming a high polymer by free radical initiated, chain propagating, addition polymerization.
Claim 6
Dependent Claim
19 words
An element according to claim 6, wherein said halide is calcium chloride, and it is in the photopolymerizable stratum.
Claim 7
Dependent Claim
13 words
An element according to claim 6, wherein the unsaturated compound is trimethylolpropane triacrylate.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |