Patent US3615635A successfully refreshed from Google Patents.
US3615635A
Expired / Lapsed
US
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Silver halide photographic emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1968-11-26
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Granted: 1971-10-26
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Expires: 1988-11-26
Abstract
Abstract and at least one organic heterocyclic compound selected from the formulas represented by the general formulas II and III, wherein Silver halide photographic emulsion comprising at least one sensitizing dye represented by general formula I: The substituent moieties shown in the above groups are described in the specification.
Inventors
- 👤 Keisuke Shiba
- 👤 Akira Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:42
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/02; C09B23/06; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; G03C1/29
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
29 words
A silver halide photographic emulsion as claimed in claim 1, wherein said sensitizing dye represented by the general formula 1 is a member selected from the group consisting of:
Claim 2
Dependent Claim
29 words
A silver halide photographic emulsion as claimed in claim 1, wherein said organic heterocyclic compound represented by general formula II is a member selected from the group consisting of:
Claim 3
Dependent Claim
30 words
A silver halide photographic emulsion as claimed in claim 1, wherein said organic heterocyclic compound represented by the general formula III is a member selected from the group consisting of:
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 |