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US2517690A Expired / Lapsed US ⏱️ 0.0 years remaining

Continuous process for decarboxylating rosin

Assignee: Compagnie Francaise de Raffinage SA
•
Filing: 1946-06-27
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Granted: 1950-08-08
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Expires: 1966-06-27
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Abstract

No abstract record available.

Inventors

  • 👤 Lienhart Jean

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 10:12
CPC Classifications
C; C09; C09F; C09F1/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 117 words
A CONTINUOUS PROCESS FOR THE LIQUID PHASE DECARBOXYLATION OF ROSIN IN THE PRESENCE OF A CATALYST FOR THE PURPOSE OF PREPARING A ROSIN OIL COMPRISING THE STEPS OF CONTINUOUSLY CIRCULATING A REACTION MASS COMPRISING SAID ROSIN AND CATALYST IN A CLOSED PATH, HEATING AND AGITATING SAID MASS AS IT TRAVELS ALONG SAID PATH TO CAUSE SAID ROSIN TO BE DECARBOXYLATED, CONTINUOUSLY INTRODUCING INTO SAID REACTION MASS AT A FEED POINT IN SAID PATH A MIXTURE OF CATALYST AND MOLTEN ROSIN TO BE DECARBOXYLATED, VIOLENTLY AGITATING SAID MIXTURE AS IT IS INTRODUCED INTO THE REACTION MASS AT SAID FEED POINT, AND CONTINUOUSLY WITHDRAWING DECARBOXYLATED ROSIN FROM SAID CLOSED PATH AT A POINT SUBTANTIALLY SPACED FROM SAID FEED POINT.
Claim 2
Dependent Claim 117 words
A CONTINUOUS PROCESS FOR THE LIQUID PHASE DECARBOXYLATION OF ROSIN IN THE PRESENCE OF A CATALYST FOR THE PURPOSE OF PREPARING A ROSIN OIL COMPRISING THE STEPS OF CONTINUOUSLY CIRCULATING A REACTION MASS COMPRISING SAID ROSIN AND CATALYST IN A CLOSED PATH, HEATING AND AGITATING SAID MASS AS IT TRAVELS ALONG SAID PATH TO CAUSE SAID ROSIN TO BE DECARBOXYLATED, CONTINUOUSLY INTRODUCING INTO SAID REACTION MASS AT A FEED POINT IN SAID PATH A MIXTURE OF CATALYST AND MOLTEN ROSIN TO BE DECARBOXYLATED, VIOLENTLY AGITATING SAID MIXTURE AS IT IS INTRODUCED INTO THE REACTION MASS AT SAID FEED POINT, AND CONTINUOUSLY WITHDRAWING DECARBOXYLATED ROSIN FROM SAID CLOSED PATH AT A POINT SUBTANTIALLY SPACED FROM SAID FEED POINT.

References Cited (Backward Citations)

US1131939A Cited
US1660762A Cited
US2228960A Cited
US2246703A Cited
US2332527A Cited
US2375590A Cited
US2374511A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1953-08-07 1954-02-06 1954-08-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1957-08-07 1958-02-06 1958-08-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1961-08-07 1962-02-06 1962-08-08 $7700.00 Window Closed / Lapsed

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