Patent US2517541A successfully refreshed from Google Patents.
US2517541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitive photographic emulsions
Assignee: Individual
•
Filing: 1948-09-07
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Granted: 1950-08-08
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Expires: 1968-09-07
Abstract
No abstract record available.
Inventors
- 👤 Christensen Jens Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:59
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; Y; Y10; Y10S; Y10S430/00; Y10S430/137
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING A WATER-SOLUBLE COBAITICYANIDE IN AN AMOUNT LESS THAN 0.1% BY WEIGHT OF THE WET EMULSION.
Claim 2
Dependent Claim
21 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING A WATER-SOLUBLE COBAITICYANIDE IN AN AMOUNT LESS THAN 0.1% BY WEIGHT OF THE WET EMULSION.
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) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |