Patent US246365A successfully refreshed from Google Patents.
Patent US3431074A successfully refreshed from Google Patents.
US3431074A
Expired / Lapsed
US
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Process for the production of highly amorphous carbon black
Assignee: Cabot Corp
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Filing: 1966-11-15
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Granted: 1969-03-04
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Expires: 1986-11-15
Abstract
No abstract record available.
Inventors
- 👤 Merrill E Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:42
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C01; C01B; C01B32/00; C09C1/485; C09C1/50; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR PRODUCING ANORPHOUS CARBON BLACK WHICH COMPRISES: (A) PROVIDING A THERMAL PLASMA HAVING A TEMPERATURE OF AT LEAST ABOUT 6000*K. PLASMA FUEL ELEMENTS OF GROUP VIII OF THE MENDELEEV PERIODIC TABLE, (B) CHARGING CARBON FEEDSTOCK INTO SAID THERMAL PLASMA, (C) TREATING THE RESULTING PLASMA EFFLUENT AT ABOVE ABOUT 2500*F. WITH CHLORINE OR BROMINE, AND (D) RECOVERING THE RESULTING CARBON BLACK AS PRODUCT.
Claim 2
Dependent Claim
64 words
A PROCESS FOR PRODUCING ANORPHOUS CARBON BLACK WHICH COMPRISES: (A) PROVIDING A THERMAL PLASMA HAVING A TEMPERATURE OF AT LEAST ABOUT 6000*K. PLASMA FUEL ELEMENTS OF GROUP VIII OF THE MENDELEEV PERIODIC TABLE, (B) CHARGING CARBON FEEDSTOCK INTO SAID THERMAL PLASMA, (C) TREATING THE RESULTING PLASMA EFFLUENT AT ABOVE ABOUT 2500*F. WITH CHLORINE OR BROMINE, AND (D) RECOVERING THE RESULTING CARBON BLACK AS PRODUCT.
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 |