Patent US2544322A successfully refreshed from Google Patents.
US2544322A
Expired / Lapsed
US
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Sensitized photographic emulsions
Assignee: Individual
•
Filing: 1940-05-17
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Granted: 1951-03-06
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Expires: 1960-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jennen Jacob Josef
- 👤 Michaelis Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:44
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; C; C09; C09B; C09B23/00; C09B23/02; C09B23/14; C09B23/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION COMPRISING A SENSITIZING DYE WHICH IS SELECTED FROM THE GROUP OF SENSITIZING THIAZOLIUM DYES WHICH
Claim 2
Dependent Claim
20 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION COMPRISING A SENSITIZING DYE WHICH IS SELECTED FROM THE GROUP OF SENSITIZING THIAZOLIUM DYES WHICH
References Cited (Backward Citations)
US2199542A
Cited
US2060283A
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US2196162A
Cited
US2289300A
Cited
GB505979A
Cited
US2233511A
Cited
US2317357A
Cited
US2330203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |