US3288696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbon black
Assignee: Ashland LLC
•
Filing: 1963-03-12
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Granted: 1966-11-29
•
Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 Harry K Orbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:10
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/485; C01; C01P; C01P2006/00; C01P2006/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN THE PRODUCTION OF CARBON BLACK BY REACTION OF AN AROMATIC HYDROCARBON WITHIN AN ELECTRIC ARC THE PROCESS COMPRISING STRIKING AN ELECTRIC ARC HAVING A NEGATIVE CHARACTERISTIC BETWEEN CATHODE AND ANODE, FEEDING THROUGH THE ARC A SUBSTANTIALLY NON-REACTIVE STABILIZING GAS, FORMING A VORTEX WITHIN THE GAS STABILIZED ELECTRIC ARC, INJECTING INTO THE VORTEX AN AROMATIC HYDROCARBON WHICH DISSOCIATES INTO A STREAM CONSISTING ESSENTIALLY OF HYDROCARBON AND CARBON, AND THEN RECOVERING THE CARBON PRODUCED IN THE REACTION.
Claim 2
Dependent Claim
76 words
IN THE PRODUCTION OF CARBON BLACK BY REACTION OF AN AROMATIC HYDROCARBON WITHIN AN ELECTRIC ARC THE PROCESS COMPRISING STRIKING AN ELECTRIC ARC HAVING A NEGATIVE CHARACTERISTIC BETWEEN CATHODE AND ANODE, FEEDING THROUGH THE ARC A SUBSTANTIALLY NON-REACTIVE STABILIZING GAS, FORMING A VORTEX WITHIN THE GAS STABILIZED ELECTRIC ARC, INJECTING INTO THE VORTEX AN AROMATIC HYDROCARBON WHICH DISSOCIATES INTO A STREAM CONSISTING ESSENTIALLY OF HYDROCARBON AND CARBON, AND THEN RECOVERING THE CARBON PRODUCED IN THE REACTION.
References Cited (Backward Citations)
US3009783A
Cited
US3167449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |