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US2851337A Expired / Lapsed US ⏱️ 0.0 years remaining

Carbon black process

Assignee: Columbian Carbon Co
•
Filing: 1951-08-22
•
Granted: 1958-09-09
•
Expires: 1971-08-22
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Abstract

No abstract record available.

Inventors

  • 👤 George L Heller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 06:42
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 133 words
IN THE PROCESS OF PRODUCING CARBON BLACK BY THERMALLY DECOMPOSING HYDROCARBONS IN WHICH A COMBUSTIBLE MIXTURE OF A FLUID FUEL AND OXYGEN-CONTAINING GAS IS BLASTED INTO ONE END OF AN ENLONGATED, UNOBSTRUCTED, HEAT-INSULATED CHAMBER AND BURNED THEREIN TO PRODUCE A VIOLENTLY TURBULENT STREAN OF BLASE FLAME GASES PASSING LONGITUDINALLY THROUGH THE CHAMBER AT A TEMPERATURE SUFFICIENTLY HIGH TO THERMALLY DECOMPOSE THE HYDROCARBONS AND TE HYDROCARBONS TO BE DECOMPOSED ARE SEPARATELY AND FORCEFULLY INJECTED INTO AND MIXED WITH SAID STREAM OF BLAST FLAME GASES WHILE THE LATTER IS PASSING THROUGH THE REACTION CHAMBER AND AT A POINT REMOVED FROM THE POINT OF INTRODUCTION OF SAID COMBUSTIBLE MIXTURE AND IN SUCH QUANTITY THAT THE RESULTANT MIXTURE IS AT THE DECOMPOSITION TEMPERATURE OF THE HYDROCARBONS, CONTINUING THE FLOW OF THE MIXTURE THROUGH THE ELONGATED CHAMBER AT
Claim 2
Dependent Claim 133 words
IN THE PROCESS OF PRODUCING CARBON BLACK BY THERMALLY DECOMPOSING HYDROCARBONS IN WHICH A COMBUSTIBLE MIXTURE OF A FLUID FUEL AND OXYGEN-CONTAINING GAS IS BLASTED INTO ONE END OF AN ENLONGATED, UNOBSTRUCTED, HEAT-INSULATED CHAMBER AND BURNED THEREIN TO PRODUCE A VIOLENTLY TURBULENT STREAN OF BLASE FLAME GASES PASSING LONGITUDINALLY THROUGH THE CHAMBER AT A TEMPERATURE SUFFICIENTLY HIGH TO THERMALLY DECOMPOSE THE HYDROCARBONS AND TE HYDROCARBONS TO BE DECOMPOSED ARE SEPARATELY AND FORCEFULLY INJECTED INTO AND MIXED WITH SAID STREAM OF BLAST FLAME GASES WHILE THE LATTER IS PASSING THROUGH THE REACTION CHAMBER AND AT A POINT REMOVED FROM THE POINT OF INTRODUCTION OF SAID COMBUSTIBLE MIXTURE AND IN SUCH QUANTITY THAT THE RESULTANT MIXTURE IS AT THE DECOMPOSITION TEMPERATURE OF THE HYDROCARBONS, CONTINUING THE FLOW OF THE MIXTURE THROUGH THE ELONGATED CHAMBER AT

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1961-09-08 1962-03-10 1962-09-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-09-08 1966-03-10 1966-09-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-09-08 1970-03-10 1970-09-09 $7700.00 Window Closed / Lapsed

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