US2523248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of alcohols and acids from fischer-tropsch synthesis product
Assignee: Cities Service Oil Co
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Filing: 1948-02-19
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Granted: 1950-09-19
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Expires: 1968-02-19
Abstract
No abstract record available.
Inventors
- 👤 Heinze Bennie
- 👤 Jack A King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:25
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/43; C07C51/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
IN THE PROCESSING OF SYNTHETICALLY PRODUCED ORGANIC MATERIALS INCLUDING HYDROCARBONS, ORGANIC ACIDS AND ALCOHOLS, THE IMPROVEMENT WHICH COMPRISES SUBJECTING A CHARGING STOCK CONSISTING OF A FISCHER-TROPSCH SYNTHESIS PRODUCT CONTAINING SUBSTANTIAL PROPORTIONS OF SUCH CONSTITUENTS AND WATER TO A FRACTIONAL DISTILLING OPERATION IN A FRACTIONATING TOWER, CONTROLLING THE FRACTIONATING OPERATION IN THE TOWER SO AS TO MAINTAIN A CUT TEMPERATURE ON THE TOWER OF FROM APPROXIMATELY 80* TO 95*C., REMOVING OVERHEAD FROM THE TOWER A PRODUCT FRACTION COMPRISING HYDROCARBONS, WATER AND SUBSTANTIALLY ALL OF THE ALCOHOL CONTENT OF THE CHARGING STOCK AND REMOVING A BOTTOMS PRODUCT FROM THE TOWER COMPRISING HYDROCARBONS, WATER AND SUBSTANTIALLY ALL OF THE ORGANIC ACIDS CONTENT OF THE CHARGING STOCK TO THE TOWER.
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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) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |