Patent US2744889A successfully refreshed from Google Patents.
US2744889A
Expired / Lapsed
US
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Ester-acids from higher fatty acids and resin acids
Assignee: Individual
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Filing: 1952-12-29
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Granted: 1956-05-08
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Expires: 1972-12-29
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Gayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:48
CPC Classifications
C; C11; C11C; C11C3/00; C11B; C11B13/00; C11B13/005; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AS A NEW COMPOSITION OF MATTER A SUBSTANCE FROM THE GROUP CONSISTING OF SYNTHETIC ESTER-ACIDS OF FATTY ACID HAVING AT LEAST TEN CARBON ATOMS IN THE MOLECULE AND METHYLOLATED NATURAL RESIN ACID, THE ACID NATURE OF THE ESTER-ACIDS BEING DUE TO THE FREE CARBOXYL GROUP OF THE RESIN ACID, THE ACID NUMBER OF SAID COMPOSITION REMAINING SUBSTANTIALLY UNCHANGED WHEN HEATED FOR ONE HOUR AT 225* C. AND BEING CLOSE TO THE THEORETICAL ACID NUMBER CALCULATED FOR THE EXPECTED PRODUCT RESULTING FROM COMPLETION OF THE ESTERIFICATION REACTION AS TO AT LEAST ONE OF THE REACTANTS ENTERING INTO THE ESTERIFICATION REACTION, ESTERS OF SAID ESTER-ACIDS AND SALTS OF SAID ESTER ACIDS.
Claim 2
Dependent Claim
109 words
AS A NEW COMPOSITION OF MATTER A SUBSTANCE FROM THE GROUP CONSISTING OF SYNTHETIC ESTER-ACIDS OF FATTY ACID HAVING AT LEAST TEN CARBON ATOMS IN THE MOLECULE AND METHYLOLATED NATURAL RESIN ACID, THE ACID NATURE OF THE ESTER-ACIDS BEING DUE TO THE FREE CARBOXYL GROUP OF THE RESIN ACID, THE ACID NUMBER OF SAID COMPOSITION REMAINING SUBSTANTIALLY UNCHANGED WHEN HEATED FOR ONE HOUR AT 225* C. AND BEING CLOSE TO THE THEORETICAL ACID NUMBER CALCULATED FOR THE EXPECTED PRODUCT RESULTING FROM COMPLETION OF THE ESTERIFICATION REACTION AS TO AT LEAST ONE OF THE REACTANTS ENTERING INTO THE ESTERIFICATION REACTION, ESTERS OF SAID ESTER-ACIDS AND SALTS OF SAID ESTER ACIDS.
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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |