US3734739A
Expired / Lapsed
US
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Silver halide emulsions sensitized with cyanine dyes containing a quaternary group
Assignee: Polaroid Corp
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Filing: 1971-07-29
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Granted: 1973-05-22
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Expires: 1991-07-29
Abstract
Abstract The present invention relates to photography and, more particularly, to a novel spectrally (optically) sensitized radiation recording photographic element which comprises a cyanine dye of the formula: WHEREIN L represents a methine group; m represents a positive integer of from 1 to 3, inclusive; Z and Z1 each represents the nonmetallic atoms necessary to complete a cyanine dye heterocyclic ring system containing a five or six membered heterocyclic nucleus; R and R1 each represents a divalent acylic cyclic group; X represents a quaternary ammonium, sulfonium or phosphonium group; Y represents a -SO3 or a -COO group; and W represents an anion.
Inventors
- 👤 A Borror
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:09
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/14; C; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/06; C09B23/08; C09B23/083; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
20 words
A radiation recording photographic element as defined in claim 1 wherein said cyanine dye comprises a dye of the formula:
Claim 2
Dependent Claim
20 words
A radiation recording photographic element as defined in claim 1 wherein said silver halide comprises silver iodobromide or silver iodochlorobromide.
Claim 3
Dependent Claim
25 words
A radiation recording photographic element as defined in claim 1 wherein said photosensitive silver halide is disposed as a particulate dispersion in a polymeric matrix.
Claim 4
Dependent Claim
16 words
A radiation recording photographic element as defined in claim 4 wherein said polymeric matrix comprises gelatin.
Claim 5
Dependent Claim
20 words
A radiation recording photographic element as defined in claim 1 wherein said cyanine dye comprises a dye of the formula:
Claim 6
Dependent Claim
21 words
A radiation recording photographic element as defined in claim 6 wherein said cyanine dye comprises a cyanine dye of the formula:
Claim 7
Dependent Claim
21 words
A radiation recording photographic element as defined in claim 6 wherein said cyanine dye comprises a cyanine dye of the formula:
Claim 8
Dependent Claim
21 words
A radiation recording photographic element as defined in claim 6 wherein said cyanine dye comprises a cyanine dye of the Formula:
Claim 9
Dependent Claim
21 words
A radiation recording photographic element as defined in claim 6 wherein said cyanine dye comprises a cyanine dye of the formula:
Claim 10
Dependent Claim
21 words
A radiation recording photographic element as defined in claim 1 wherein said cyanine dye comprises a cyanine dye of the formula:
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |