Patent US3057743A successfully refreshed from Google Patents.
US3057743A
Expired / Lapsed
US
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Non-crystallizing sucrose lower fatty acid esters and compositions thereof
Assignee: Eastman Kodak Co
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Filing: 1959-04-02
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Granted: 1962-10-09
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Expires: 1979-04-02
Abstract
No abstract record available.
Inventors
- 👤 George P Touey
- 👤 Herman E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:17
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A LOWER FATTY ACID ESTER OF CELLULOSE AND A NON-CRYSTALLIZING SUCROSE ESTER SELECTED FROM THE GROUP CONSISTING OF THE SUCROSE PROPIONATES AND THE SUCROSE ISOBUTYRATES HAVING 0.25-1.50 UNESTERIFIED HYDROXYL GROUPS PER SUCROSE MOLECULE THE SUCROSE ESTER CONSTITUTING 5-70% OF THE MIXTURE.
Claim 2
Dependent Claim
49 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A LOWER FATTY ACID ESTER OF CELLULOSE AND A NON-CRYSTALLIZING SUCROSE ESTER SELECTED FROM THE GROUP CONSISTING OF THE SUCROSE PROPIONATES AND THE SUCROSE ISOBUTYRATES HAVING 0.25-1.50 UNESTERIFIED HYDROXYL GROUPS PER SUCROSE MOLECULE THE SUCROSE ESTER CONSTITUTING 5-70% OF THE MIXTURE.
References Cited (Backward Citations)
US1959590A
Cited
US2013034A
Cited
US2092677A
Cited
US2126936A
Cited
GB552161A
Cited
US2931802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |