US3431075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbon black
Assignee: Phillips Petroleum Co
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Filing: 1966-12-23
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Granted: 1969-03-04
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Expires: 1986-12-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Gunnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:33
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01J; B01J19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
IN A PROCESS FOR PRODUCING CARBON BLACK WHEREIN A PLURALITY OF STREAMS OF HOT COMBUSTION GASES RESULTING FROM THE COMBUSTION OF LIKE COMBUSTIBEL MIXTURES OF A HYDROCARBON FUEL AND AN OXIDANT ARE INTRODUCED INTO A GENERALLY CYLINDRICAL FIRST ZONE HAVING A DIAMETER GREATER THAN ITS LENGTH, A HYDROCARBON FEEDSTOCK IS INTRODUCED ALONG THE LONGITUDINAL AXIS OF SAID FIRST ZONE, SAID FEEDSTOCK SURROUNDED BY A MOVING BLANKET OF HOT COMBUSTION GASES PASSES INTO AN AXIALLY ALIGNED GENERALLY CYLINDRICAL SECOND ZONE HAVING A LENGTH GREATER THAN ITS DIAMETER, AND CARBON BLACK PRODUCT IS RECOVERED FROM THE GASEOUS EFFLUENT FROM SAID SECOND ZONE, THE IMPROVEMENT COMPRISING: PRODUCING AT LEAST ONE OF SAID STREAMS OF HOT COMBUSTION GASES BY BURNING A COMBUSTIBLE MIXTURE OF A HYDROCARBON FUEL AND AN OXIDANT CONTAINING AN AMOUNT OF OXIDANT WHICH IS LESS THAN THE STOICHIOMETRIC AMOUNT REQUIRED FOR THE BURNING OF SAID FUEL; AND PRODUCING AT LEAST ONE OTHER OF SAID STREAMS OF HOT COMBUSTION GASES BY BURNING A COMBUSTIBLE MIXTURE OF A HYDROCARBON FUEL AND AN OXIDANT CONTAINING AN AMOUNT OF OXIDANT WHICH IS GREATER THAN THE STOICHIOMETRIC AMOUNT REQUIRED FOR THE BURNING OF SAID FUEL.
Claim 2
Dependent Claim
189 words
IN A PROCESS FOR PRODUCING CARBON BLACK WHEREIN A PLURALITY OF STREAMS OF HOT COMBUSTION GASES RESULTING FROM THE COMBUSTION OF LIKE COMBUSTIBEL MIXTURES OF A HYDROCARBON FUEL AND AN OXIDANT ARE INTRODUCED INTO A GENERALLY CYLINDRICAL FIRST ZONE HAVING A DIAMETER GREATER THAN ITS LENGTH, A HYDROCARBON FEEDSTOCK IS INTRODUCED ALONG THE LONGITUDINAL AXIS OF SAID FIRST ZONE, SAID FEEDSTOCK SURROUNDED BY A MOVING BLANKET OF HOT COMBUSTION GASES PASSES INTO AN AXIALLY ALIGNED GENERALLY CYLINDRICAL SECOND ZONE HAVING A LENGTH GREATER THAN ITS DIAMETER, AND CARBON BLACK PRODUCT IS RECOVERED FROM THE GASEOUS EFFLUENT FROM SAID SECOND ZONE, THE IMPROVEMENT COMPRISING: PRODUCING AT LEAST ONE OF SAID STREAMS OF HOT COMBUSTION GASES BY BURNING A COMBUSTIBLE MIXTURE OF A HYDROCARBON FUEL AND AN OXIDANT CONTAINING AN AMOUNT OF OXIDANT WHICH IS LESS THAN THE STOICHIOMETRIC AMOUNT REQUIRED FOR THE BURNING OF SAID FUEL; AND PRODUCING AT LEAST ONE OTHER OF SAID STREAMS OF HOT COMBUSTION GASES BY BURNING A COMBUSTIBLE MIXTURE OF A HYDROCARBON FUEL AND AN OXIDANT CONTAINING AN AMOUNT OF OXIDANT WHICH IS GREATER THAN THE STOICHIOMETRIC AMOUNT REQUIRED FOR THE BURNING OF SAID FUEL.
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) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |