US2586860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of vinyl esters of long chain fatty acids from the corresponding free fatty acids
Assignee: United States Department of Agriculture
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Filing: 1951-04-13
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Granted: 1952-02-26
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Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 William S Port
- 👤 Jr Edmund F Jordan
- 👤 Swern Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:15
CPC Classifications
C; C11; C11B; C11B7/00; C11B7/0008; C11B7/0025; C07; C07C; C07C67/00; C07C67/48; C07C67/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
THE PROCESS OF SEPARATING A VINYL ESTER OF A LONG CHAIN FATTY ACID FROM A MIXTURE OF THE ESTER AND THE CORRESPONDING FREE ACID, COMPRISING FORMING A SOLUTION OF THE MIXTURE IN AN INERT SOLVENT IN WHICH AN INORGANIC SALT OF THE ACID IS INSOLUBLE, ADDING A COMPOUND WHICH REACTS WITH THE ACID TO FORM THE INSOLUBLE INORGANIC SALT OF THE ACID, SEPARATING THE PRECIPITATED SALT, AND RECOVERING THE VINYL ESTER FROM THE REMAINING SOLUTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |