US2848330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions sensitized with sulfonium salts and alkylene oxide polymers
Assignee: Eastman Kodak Co
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Filing: 1955-12-01
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Granted: 1958-08-19
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Expires: 1975-12-01
Abstract
No abstract record available.
Inventors
- 👤 Chechak Jonas John
- 👤 Jr John Sagal
- 👤 Jr Albert C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:01
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/043; G03C1/06; G03C1/08; G03C1/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A LIGHT-SENSITIVE SILVER HALIDE EMULSION SENSITIZED WITH A MIXTURE OF AN ALKYLENE OXIDE POLYMER SELECTED FROM THE CLASS CONSISTING OF (1) POLYALKYLENE GLYCOLS AND (2) CONDENSATION PRODUCTS OF 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 SULFONIUM SALT HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
69 words
A LIGHT-SENSITIVE SILVER HALIDE EMULSION SENSITIZED WITH A MIXTURE OF AN ALKYLENE OXIDE POLYMER SELECTED FROM THE CLASS CONSISTING OF (1) POLYALKYLENE GLYCOLS AND (2) CONDENSATION PRODUCTS OF 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 SULFONIUM SALT HAVING THE GENERAL FORMULA:
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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |