Patent US3592597A successfully refreshed from Google Patents.
US3592597A
Expired / Lapsed
US
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Carbon black process and reactor
Assignee: Phillips Petroleum Co
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Filing: 1968-05-23
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Granted: 1971-07-13
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Expires: 1988-05-23
Abstract
Abstract PROCESS AND APPARATUS FOR THE PRODUCTION OF CARBON BLACK WHEREIN AN OXYGEN-CONTAINING GAS, WITH OR WITHOUT FUEL, IS INTRODUCED INTO AN AXIAL ZONE OF A REACTOR AND PASSED THROUGH A DIAMETRALLY RESTRICTED SECTION OF SAID ZONE WHEREIN IT IS COMMINGLED WITH A HYDROCARBON FEE, THE MIXTURE PASSED INTO A COMBUSTION ZONE AND CONTACTED THEREIN WITH HOT COMBUSTION GASES, AND THE RESULTING MASS PASSED INTO A REACTION ZONE WHEREIN THE HYDROCARBON FEED IS PYROLYTICALLY DECOMPOSED INTO CARBON BLACK.
Inventors
- 👤 Joseph C Krejci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:01
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: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |