US2552564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of organic compounds
Assignee: MW Kellogg Co
•
Filing: 1947-02-27
•
Granted: 1951-05-15
•
Expires: 1967-02-27
Abstract
No abstract record available.
Inventors
- 👤 Charles C King
- 👤 Norman L Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:16
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD FOR SEPARATING WATER-INSOLUBLE OXYGENATED ORGANIC COMPOUNDS FROM A MIXTURE CONTAINING THEM AND HYDROCARBONS WHICH COMPRISES: INTRODUCING SUCH A FEED-MIXTURE INTO AN EXTRACTION ZONE; INTRODUCING AND AQUEOUS SOLUTION OF AN OXYGEN-CONTAINING SOLVENT FOR OXYGENATED COMPOUNDS IN SAID MIXTURE INTO SAID EXTRACTION ZONE AT A POINT ABOVE THE INTRODUCTION OF SAID MIXTURE; INTRODUCING A RELATIVELY LOW-BOILING HYDROCARBON AS A WASH-OIL INTO SAID EXTRACTION ZONE AT A POINT BELOW THE INTRODUCTION OF SAID FEED-MIXTURE TO FORM A RAFFINATE PHASE COMPRISING HYDROCARBONS AND AN AQUEOUS EXTRACT PHASE COMPRISING OXYGENATED COMPOUNDS; AND WITHDRAWING THE PHASES THUS PRODUCED FROM SAID EXTRACTION ZONE.
Claim 2
Independent Claim
98 words
A METHOD FOR SEPARATING WATER-INSOLUBLE OXYGENATED ORGANIC COMPOUNDS FROM A MIXTURE CONTAINING THEM AND HYDROCARBONS WHICH COMPRISES: INTRODUCING SUCH A FEED-MIXTURE INTO AN EXTRACTION ZONE; INTRODUCING AND AQUEOUS SOLUTION OF AN OXYGEN-CONTAINING SOLVENT FOR OXYGENATED COMPOUNDS IN SAID MIXTURE INTO SAID EXTRACTION ZONE AT A POINT ABOVE THE INTRODUCTION OF SAID MIXTURE; INTRODUCING A RELATIVELY LOW-BOILING HYDROCARBON AS A WASH-OIL INTO SAID EXTRACTION ZONE AT A POINT BELOW THE INTRODUCTION OF SAID FEED-MIXTURE TO FORM A RAFFINATE PHASE COMPRISING HYDROCARBONS AND AN AQUEOUS EXTRACT PHASE COMPRISING OXYGENATED COMPOUNDS; AND WITHDRAWING THE PHASES THUS PRODUCED FROM SAID EXTRACTION ZONE.
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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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |