US2882160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitizing dyes from 2-methyl-5, 6-dihydro-4-cyclopentathiazoles
Assignee: Unisys Corp
•
Filing: 1955-05-10
•
Granted: 1959-04-14
•
Expires: 1975-05-10
Abstract
No abstract record available.
Inventors
- 👤 Stevens George De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:05
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/14; C09B23/145; C09B23/02; C09B23/10; C09B23/146; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A SILVER HALIDE PHOTOGRAPHIC EMULSION CONTAINING A DYE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
12 words
A SILVER HALIDE PHOTOGRAPHIC EMULSION CONTAINING A DYE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2353164A
Cited
US2340882A
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US2166736A
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US2263749A
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US2322015A
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US2336463A
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US2495260A
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US2338782A
Cited
US2320654A
Cited
US2330203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |