US2628967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of partial esters of polyhydric alcohols with carboxylic acids
Assignee: Givaudan Roure Corp
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Filing: 1948-11-13
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Granted: 1953-02-17
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Expires: 1968-11-13
Abstract
No abstract record available.
Inventors
- 👤 Voegeli Roland-Carlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:53
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR PREPARING PARTIAL CARBOXYLIC ACID ESTER OF POLYHYDRIC ALCHOLS, WHICH COMPRISES HEATING GLYCEROL AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF HIGHER FATTY ACIDS AND HIGHER FATTY ACID POLYESTERS AT AN ELEVATED TEMPERATURE, IN TE PRESENCE OF AT LEAST ONE CATALYST SELECTED FROM THE GROUP CONSISTING OF METALS HAVING ATOMIC NUMBERS BETWEEN 24 AND 28, INCLUSIVE IN SERIES 4 OF THE PERIODIC TABLE WHICH ARE CAPABLE OF POSSESSING MORE THAN ONE VALENCE IN THEIR COMPOUNDS AND THE SALTS OF SAID METALS.
Claim 2
Dependent Claim
84 words
A PROCESS FOR PREPARING PARTIAL CARBOXYLIC ACID ESTER OF POLYHYDRIC ALCHOLS, WHICH COMPRISES HEATING GLYCEROL AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF HIGHER FATTY ACIDS AND HIGHER FATTY ACID POLYESTERS AT AN ELEVATED TEMPERATURE, IN TE PRESENCE OF AT LEAST ONE CATALYST SELECTED FROM THE GROUP CONSISTING OF METALS HAVING ATOMIC NUMBERS BETWEEN 24 AND 28, INCLUSIVE IN SERIES 4 OF THE PERIODIC TABLE WHICH ARE CAPABLE OF POSSESSING MORE THAN ONE VALENCE IN THEIR COMPOUNDS AND THE SALTS OF SAID METALS.
References Cited (Backward Citations)
US2022494A
Cited
US2384793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |