US2895804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of carbon black
Assignee: Columbian Carbon Co
•
Filing: 1957-07-16
•
Granted: 1959-07-21
•
Expires: 1977-07-16
Abstract
No abstract record available.
Inventors
- 👤 George L Heller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:21
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN THE PROCESS FOR PRODUCING CARBON BLACK BY THE DECOMPOSITION OF HYDROCARBONS WHEREBY A COMBUSTIBLE MIXTURE OF A FLUID FUEL AND AN OXYGEN-CONTAINING GAS IS BLASTED LONGITUDINALLY INTO ONE OF AN ELONGATED, HEATINSULATED REACTION CHAMBER, THROUGH THE UPSTREAM END WALL OF THE CHAMBER, AS A MULTIPLICITY OF STREAMS SYMMETRICALLY POSITIONED OVER THE TRANSVERSE AREA OF THE CHAMBER, AND IS BURNED AS IT ENTERS THE CHAMBER TO FORM A SUBSTANTIALLY UNIFORM STREAM OF HOT GASES PASSING SUBSTANTIALLY LONGITUDINALLY THROUGH THE CHAMBER AT HIGH VELOCITY AND TURBULENCE, AND THE HYDROCARBON TO BE DECOMPOSED IS SEPARATELY INTRODUCED INTO THE CHAMBER THROUGH SAID UPSTREAM END WALL OF THE CHAMBER AS A PLURALITY OF SYMMETRICALLY POSITIONED STREAMS, AND IS MIXED WITH SAID HOT GASES AND DECOMPOSED BY HEAT ABSORBED THEREFROM TO FORM CARBON BLACK IN GASEOUS SUSPENSION AND THE CARBON BLACK IS SEPARATED FROM THE
Claim 2
Dependent Claim
140 words
IN THE PROCESS FOR PRODUCING CARBON BLACK BY THE DECOMPOSITION OF HYDROCARBONS WHEREBY A COMBUSTIBLE MIXTURE OF A FLUID FUEL AND AN OXYGEN-CONTAINING GAS IS BLASTED LONGITUDINALLY INTO ONE OF AN ELONGATED, HEATINSULATED REACTION CHAMBER, THROUGH THE UPSTREAM END WALL OF THE CHAMBER, AS A MULTIPLICITY OF STREAMS SYMMETRICALLY POSITIONED OVER THE TRANSVERSE AREA OF THE CHAMBER, AND IS BURNED AS IT ENTERS THE CHAMBER TO FORM A SUBSTANTIALLY UNIFORM STREAM OF HOT GASES PASSING SUBSTANTIALLY LONGITUDINALLY THROUGH THE CHAMBER AT HIGH VELOCITY AND TURBULENCE, AND THE HYDROCARBON TO BE DECOMPOSED IS SEPARATELY INTRODUCED INTO THE CHAMBER THROUGH SAID UPSTREAM END WALL OF THE CHAMBER AS A PLURALITY OF SYMMETRICALLY POSITIONED STREAMS, AND IS MIXED WITH SAID HOT GASES AND DECOMPOSED BY HEAT ABSORBED THEREFROM TO FORM CARBON BLACK IN GASEOUS SUSPENSION AND THE CARBON BLACK IS SEPARATED FROM THE
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US2440424A
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US2597232A
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US2623811A
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US2659662A
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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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |