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US3348949A
Expired / Lapsed
US
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Photographic light-sensitive materials
Assignee: Ilford Imaging UK Ltd
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Filing: 1964-03-16
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Granted: 1967-10-24
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Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Bannert Konrad Jerzy
- 👤 Thurston Elvin Frederi William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:56
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; G03C1/29; C; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION WHICH CONTAINS A SENSITISING DYE SELECTED FROM THE CLASS CONSISTING OF A DYE OF THE FORMULA
Claim 2
Dependent Claim
21 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION WHICH CONTAINS A SENSITISING DYE SELECTED FROM THE CLASS CONSISTING OF A DYE OF THE FORMULA
References Cited (Backward Citations)
CA537025A
Cited
US2256163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |