US3565586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing carbon black
Assignee: Union Carbide Corp
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Filing: 1967-04-10
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Granted: 1971-02-23
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Expires: 1987-04-10
Abstract
Abstract A BURNER SUITABLE FOR THE MANUFACTURE OF CARBON BLACK COMPRISES AN INTERNAL COMBUSTION CHAMBER COMMUNICATING AXIALLY AT ITS DISCHARGE END WITH A PROCESSING CHAMBER. THE BURNER OPERATES BY HAVING FLUID HYDROCARBON STOCK INJECTED AXIALLY AS A CONTINOUS COHERENT STREAM FROM THE INLET END OF THE COMBUSTION CHAMBER THROUGH SUCH CHAMBER AND INTO THE PROCESSING CHAMBER WHERE A CONSTRICTED, HIGH VELOCITY STREAM OF HOT COMBUSTION PRODUCTS DISPERSE, SHEAR AND PYROLYZE THE HYDROCARBON FEED STOCK TO FORM CARBON BLACK. USE OF A WATER-COOLED, HEAT CONDUCTIVE METAL BODY WHICH FORMS THE WALLS OF BOTH THE COMBUSTION AND PROCESSING CHAMBERS PERMITS USE OF VERY HIGH OPERATING TEMPERATURES.
Inventors
- 👤 Kazuo Kiyonaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:53
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; F; F23; F23D; F23D14/00; B; B01; B01J; B01J19/00; B01J19/0006
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |