US3071443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of carbon black
Assignee: Columbian Carbon Co
•
Filing: 1961-09-15
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Granted: 1963-01-01
•
Expires: 1981-09-15
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Bellew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:25
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01P; C01P2006/00; C01P2006/12; C01P2006/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN THE PROCES FOR PRODUCING CARBON BLACK BY THE DECOMPOSITION OF A HYDROCARBON MAKE IN WHICH THERE IS ESTABLISHED AND MAINTAINED WITHIN AN ELONGATED FURNACE CHAMBER A STREAM OF HOT COMBUSTION GASES AT A TEMPRATURE IN EXCESS OF THAT AT WHICH THE HYDROCARBON MAKE IS DECOMPOSED TO CARBON BLACK AND THE HYDROCARBON MAKE IS FORCEFULLY INJECTED INTO THE HOT GAS STREAM, RAPIDLY DISPERSED THEREIN AND DECOMPOSED BY HEAT ABSORBED THEREFROM TO FORM CARBON BLACK IN SUSPENSION, THE EFFLUENT PASSING FROM THE DOWNSTREAM END OF THE CHAMBER AND THE CARBON BLACK SEPARATED AND COLLECTED, THE IMPROVEMENT WHICH COMPRISES INJECTING THE HYDROCARBON MAKE INTO THE HOT GAS STREAM AS AN EXPANDING, CONICAL SPRAY STREAM AND CAUSING SAID SPRAY STREAM TO PULSATE BY RAPIDLY VARYING THE SPREAD ANGLE OF THE STREAM.
Claim 2
Dependent Claim
128 words
IN THE PROCES FOR PRODUCING CARBON BLACK BY THE DECOMPOSITION OF A HYDROCARBON MAKE IN WHICH THERE IS ESTABLISHED AND MAINTAINED WITHIN AN ELONGATED FURNACE CHAMBER A STREAM OF HOT COMBUSTION GASES AT A TEMPRATURE IN EXCESS OF THAT AT WHICH THE HYDROCARBON MAKE IS DECOMPOSED TO CARBON BLACK AND THE HYDROCARBON MAKE IS FORCEFULLY INJECTED INTO THE HOT GAS STREAM, RAPIDLY DISPERSED THEREIN AND DECOMPOSED BY HEAT ABSORBED THEREFROM TO FORM CARBON BLACK IN SUSPENSION, THE EFFLUENT PASSING FROM THE DOWNSTREAM END OF THE CHAMBER AND THE CARBON BLACK SEPARATED AND COLLECTED, THE IMPROVEMENT WHICH COMPRISES INJECTING THE HYDROCARBON MAKE INTO THE HOT GAS STREAM AS AN EXPANDING, CONICAL SPRAY STREAM AND CAUSING SAID SPRAY STREAM TO PULSATE BY RAPIDLY VARYING THE SPREAD ANGLE OF THE STREAM.
References Cited (Backward Citations)
US2641534A
Cited
US2971822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |