US2808331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions containing synthetic polymer vehicles
Assignee: Eastman Kodak Co
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Filing: 1955-06-29
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Granted: 1957-10-01
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Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 Cornelius C Unruh
- 👤 Donald A Smith
- 👤 William J Priest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:53
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; C; C08; C08F; C08F226/00; C08F226/02; C08F8/00; C08F8/12; C08F8/26; C08J; C08J5/00; C08J5/18; G03C1/053; G03C5/00; G03C5/26; G03C5/29; G03C5/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PHOTOGRAPHIC EMULSION COMPRISING A MIXTURE OF SILVER HALIDE AND A HYDROPHOLOC FILM-FORMING POLYMER CONTAINING FROM ABOUT 0.4 TO 2.5 MOLE PERCENT OF RECURRING UNITS OF THE CLASS CONSISTING OF
Claim 2
Dependent Claim
30 words
A PHOTOGRAPHIC EMULSION COMPRISING A MIXTURE OF SILVER HALIDE AND A HYDROPHOLOC FILM-FORMING POLYMER CONTAINING FROM ABOUT 0.4 TO 2.5 MOLE PERCENT OF RECURRING UNITS OF THE CLASS CONSISTING OF
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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |