Patent US9221028B2 successfully refreshed from Google Patents.
US3009783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbon black
Assignee: Sheer Korman Associates Inc
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Filing: 1959-12-04
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Granted: 1961-11-21
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Expires: 1979-12-04
Abstract
No abstract record available.
Inventors
- 👤 Sheer Charles
- 👤 Korman Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:01
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/54; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/64
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
61 words
A PROCESS OF FORMING CARBON BLACK WHICH COMPRISES ESTABLISHING A HIERARC WITH A CARBON ANODE, AND INJECTING INTO AND THOROUGHLY MINGLING WITH THE TAIL FLAME OF THE ARC A HYDROCARBON AT A POINT WHERE THE TEMPERATURE OF THE FLAME IS ABOVE THE DECOMPOSITION TEMPERATURE OF THE HYDROCARBON, COOLING THE GASES BELOW THE TEMPERATURE OF RECOMBINATION AND COLLECTING THE CARBON SO FORMED.
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) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |