Patent US2664435A successfully refreshed from Google Patents.
US2664435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of organic compounds
Assignee: MW Kellogg Co
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Filing: 1946-12-26
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Granted: 1953-12-29
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Expires: 1966-12-26
Abstract
No abstract record available.
Inventors
- 👤 William P Burton
- 👤 Solomon Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:07
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/12; C10G21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR TREATING A MIXTURE COMPRISING ALCOHOLS HAVING AT LEAST 7 CARBON ATOMS PER MOLECULE AND HYDROCARBONS, SAID ALCOHOLS AND HYDROCARBONS BOILING BETWEEN ABOUT 310* F. AND ABOUT 430* F AND OBTAINED IN THE CATALYTIC HYDROGENATION OF OXIDES OF CARBON, WHICH COMPRISES: SUBJECTING SAID MIXTURE TO EXTRACTION TREATMENT WITH A SOLVENT COMPRISING A GLYCOL TO OBTAIN AN EXTRACT COMPRISING ALCOHOLS AND A RELATIVELY SMALL PORTION OF SAID HYDROCARBONS, SAID HYDROCARBONS BEING PRESENT IN AZEOTROPICFORMING PROPORTIONS WITH SAID SOLVENT, AND A RAFFINATE COMPRISING THE REMAINDER OF SAID HYDROCARBONS; RECOVERING THE EXTRACT THUS FORMED; SUBJECTING THE EXTRACT THUS RECOVERED TO DISTILLATION TO FORM A RELATIVELY HIGH BOILING FRACTION COMPRISING ALCOHOLS AND A RELATIVELY LOW BOILING FRACTION COMPRISING AZEOTROPES OF SAID HYDROCARBONS AND SOLVENT; AND SEPARATING HYDROCARBONS AND SOLVENT FROM SAID AZEOTROPES.
Claim 2
Dependent Claim
130 words
A PROCESS FOR TREATING A MIXTURE COMPRISING ALCOHOLS HAVING AT LEAST 7 CARBON ATOMS PER MOLECULE AND HYDROCARBONS, SAID ALCOHOLS AND HYDROCARBONS BOILING BETWEEN ABOUT 310* F. AND ABOUT 430* F AND OBTAINED IN THE CATALYTIC HYDROGENATION OF OXIDES OF CARBON, WHICH COMPRISES: SUBJECTING SAID MIXTURE TO EXTRACTION TREATMENT WITH A SOLVENT COMPRISING A GLYCOL TO OBTAIN AN EXTRACT COMPRISING ALCOHOLS AND A RELATIVELY SMALL PORTION OF SAID HYDROCARBONS, SAID HYDROCARBONS BEING PRESENT IN AZEOTROPICFORMING PROPORTIONS WITH SAID SOLVENT, AND A RAFFINATE COMPRISING THE REMAINDER OF SAID HYDROCARBONS; RECOVERING THE EXTRACT THUS FORMED; SUBJECTING THE EXTRACT THUS RECOVERED TO DISTILLATION TO FORM A RELATIVELY HIGH BOILING FRACTION COMPRISING ALCOHOLS AND A RELATIVELY LOW BOILING FRACTION COMPRISING AZEOTROPES OF SAID HYDROCARBONS AND SOLVENT; AND SEPARATING HYDROCARBONS AND SOLVENT FROM SAID AZEOTROPES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |