Patent US2563708A successfully refreshed from Google Patents.
US2563708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous emulsions of cellulose esters
Assignee: Eastman Kodak Co
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Filing: 1948-02-27
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Granted: 1951-08-07
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Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Carlton L Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:17
CPC Classifications
C; C09; C09D; C09D101/00; C09D101/08; C09D101/10; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
AN AQUEOUS EMULSION OF A LOWER FATTY ACID ESTER OF CELLULOSE WHICH COMPRISES THE CELLULOSE ESTER EMULSIFIED IN A LIQUID MASS ESSENTIALLY CONSISTING OF AN ORGANIC SOLVENT FOR THE CELLULOSE ESTER, WATER AND A SALT OF CELLULOSE SULFATE AND A BASE SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS AND THE ALIPHATIC AND CYCLOALIPHATIC AMINES OF 1-12 CARBON ATOMS HAVING ONLY CARBON, THEREIN.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |