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US2523248A Expired / Lapsed US ⏱️ 0.0 years remaining

Separation of alcohols and acids from fischer-tropsch synthesis product

Assignee: Cities Service Oil Co
•
Filing: 1948-02-19
•
Granted: 1950-09-19
•
Expires: 1968-02-19
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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.

References Cited (Backward Citations)

US1847597A Cited
US1865887A Cited
US2159984A Cited
US2317758A Cited
US2290483A Cited
US2412215A Cited
US2407920A Cited
US2438300A Cited
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US2437649A Cited
US2476788A Cited
US2457257A Cited

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

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