US2694637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions containing a silanic sensitizer
Assignee: EIDP Inc
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Filing: 1951-07-19
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Granted: 1954-11-16
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Expires: 1971-07-19
Abstract
No abstract record available.
Inventors
- 👤 Russell H Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:54
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING FROM 0.5 TO 370 MG. OF A SILANIC COMPOUND HAVING AT LEAST ONE SILICON-HYDROGEN BOND PER 1.5 MOLS OF SILVER HALIDE.
Claim 2
Dependent Claim
27 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING FROM 0.5 TO 370 MG. OF A SILANIC COMPOUND HAVING AT LEAST ONE SILICON-HYDROGEN BOND PER 1.5 MOLS OF SILVER HALIDE.
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) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |