US3017271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions sensitized with alkylene oxide polymers and quaternary ammonium salts
Assignee: Eastman Kodak Co
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Filing: 1958-07-02
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Granted: 1962-01-16
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Expires: 1978-07-02
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Piper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A LIGHT-SENSITIVE SILVER HALIDE EMULSION SENSITIZED WITH A MIXTURE OF AN ALKYLENE OXIDE POLYMER SELECTED FROM THE CLASS CONSISTING OF (1) POLYALKYLENE ETHER GLYCOLS AND (2) CONDENSATION PRODUCTS OF AN ALKYLENE OXIDE WITH ORGANIC COMPOUNDS CONTAINING AN ACTIVE HYDROGEN ATOM, SAID ALKYLENE OXIDE CONTAINING FROM 2 TO 4 CARBON ATOMS AND SAID ALKYLENE OXIDE POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 300, AND A MONO QUATERNARY AMMONIUM SALT SILVER HALIDE CHEMICAL SENSITIZING AGENT HAVING A CHAIN OF AT LEAST SEVEN ATOMS ATTACHED TO A SINGLE QUATERNARY AMMONIUM GROUP.
Claim 2
Dependent Claim
89 words
A LIGHT-SENSITIVE SILVER HALIDE EMULSION SENSITIZED WITH A MIXTURE OF AN ALKYLENE OXIDE POLYMER SELECTED FROM THE CLASS CONSISTING OF (1) POLYALKYLENE ETHER GLYCOLS AND (2) CONDENSATION PRODUCTS OF AN ALKYLENE OXIDE WITH ORGANIC COMPOUNDS CONTAINING AN ACTIVE HYDROGEN ATOM, SAID ALKYLENE OXIDE CONTAINING FROM 2 TO 4 CARBON ATOMS AND SAID ALKYLENE OXIDE POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 300, AND A MONO QUATERNARY AMMONIUM SALT SILVER HALIDE CHEMICAL SENSITIZING AGENT HAVING A CHAIN OF AT LEAST SEVEN ATOMS ATTACHED TO A SINGLE QUATERNARY AMMONIUM GROUP.
References Cited (Backward Citations)
US2280722A
Cited
US2410690A
Cited
US2694716A
Cited
US2728667A
Cited
US2728666A
Cited
US2728663A
Cited
US2784090A
Cited
US2716062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |