US2894009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of sulfated higher aliphatic acid esters
Assignee: Colgate Palmolive Co
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Filing: 1957-03-27
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Granted: 1959-07-07
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Expires: 1977-03-27
Abstract
No abstract record available.
Inventors
- 👤 Schmolka Irving Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:50
CPC Classifications
B; B01; B01J; B01J41/00; C; C07; C07C; C07C303/00; C07C303/42; C07C303/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR THE PURIFICATION OF AN IMPURE WATERSOLUBLE SULFATED PARTIAL HIGHER FATTY ACID ESTER OF A POLYHYDRIC ALCOHOL ADMIXED WITH HIGHER FATTY ACID WHICH COMPRISES CONTACTING AN AQUEOUS SOLUTION OF SAID IMPURE SULFATE ESTER MATERIAL WITH AN ANION EXCHANGE RESIN TO REMOVE PREFERENTIALLY SAID HIGHER FATTY ACID, AND SEPARATING SAID SULFATE ESTER IN PURIFIED FORM FROM SAID RESIN.
Claim 2
Dependent Claim
59 words
A PROCESS FOR THE PURIFICATION OF AN IMPURE WATERSOLUBLE SULFATED PARTIAL HIGHER FATTY ACID ESTER OF A POLYHYDRIC ALCOHOL ADMIXED WITH HIGHER FATTY ACID WHICH COMPRISES CONTACTING AN AQUEOUS SOLUTION OF SAID IMPURE SULFATE ESTER MATERIAL WITH AN ANION EXCHANGE RESIN TO REMOVE PREFERENTIALLY SAID HIGHER FATTY ACID, AND SEPARATING SAID SULFATE ESTER IN PURIFIED FORM FROM SAID RESIN.
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) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |