US3353915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making carbon black
Assignee: Continental Carbon Co
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Filing: 1964-12-04
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Granted: 1967-11-21
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Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Burton F Latham
- 👤 Robert G James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:39
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01J; B01J19/00; C01; C01P; C01P2006/00; C01P2006/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE METHOD OF MAKING CARBON BLACK WHICH INCLUDES CONTINUOUSLY ESTABLISHING A MIXTURE OF FUEL GAS AND COMBUSTION AIR WITHIN A SUBSTANTIALLY UNOBSTRUCTED CYLINDRICAL FIRST ZONE; IGNITING SAID MIXTURE WHILE IN SAID FIRST ZONE; PASSING THE BURNING MIXTURE INTO A SECOND ZONE COMPRISING AN ELONGATED TUBE IN AXIAL ALIGMENT AND OPEN COMMUNICATION WITH SAID FIRST ZONE; INJECTING CARBON BLACK PRODUCING FEEDSTOCK BY SONIC ENERGY WAVES INTO SAID SECOND ZONE AND INTO THE IGNITED MIXTURE THEREIN; PYROLYTICALLY DISSOCIATING SAID FEEDSTOCK TO PRODUCE CARBON BLACK AEROSOL; AND COOLING THE EFFLUENT AND RECOVERING THE CARBON BLACK THEREFROM.
Claim 2
Independent Claim
93 words
THE METHOD OF MAKING CARBON BLACK WHICH INCLUDES CONTINUOUSLY ESTABLISHING A MIXTURE OF FUEL GAS AND COMBUSTION AIR WITHIN A SUBSTANTIALLY UNOBSTRUCTED CYLINDRICAL FIRST ZONE; IGNITING SAID MIXTURE WHILE IN SAID FIRST ZONE; PASSING THE BURNING MIXTURE INTO A SECOND ZONE COMPRISING AN ELONGATED TUBE IN AXIAL ALIGMENT AND OPEN COMMUNICATION WITH SAID FIRST ZONE; INJECTING CARBON BLACK PRODUCING FEEDSTOCK BY SONIC ENERGY WAVES INTO SAID SECOND ZONE AND INTO THE IGNITED MIXTURE THEREIN; PYROLYTICALLY DISSOCIATING SAID FEEDSTOCK TO PRODUCE CARBON BLACK AEROSOL; AND COOLING THE EFFLUENT AND RECOVERING THE CARBON BLACK THEREFROM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |