US3331664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing carbon black
Assignee: Cabot Corp
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Filing: 1964-03-02
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Granted: 1967-07-18
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Merrill E Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:33
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/485; C01; C01P; C01P2006/00; C01P2006/12; C01P2006/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR MAKING CARBON BLACK COMPRISING: (A) ELECTRICALLY INDUCING HEATING OF A STREAM OF AN INERT GAS TO A THERMAL PLASMA STATE OF AT LEAST ABOUT ONE ATMOSPHERE PRESSURE WHEREIN FROM ABOUT 10 TO ABOUT 50% OF SAID GAS IS IN AN IONIZED STATE, THEREBY FORMING A ZONE SUITABLE FOR CARRYING OUT HIGH TEMPERATURE REACTIONS AND (B) CONTINUOUSLY FEEDING A HALOGENATED CARBON CONPOUND INTO SAID ZONE, THEREBY CAUSING THE DECOMPOSITION OF SAID COMPOUND TO FORM CARBON BLACK.
Claim 2
Dependent Claim
78 words
A PROCESS FOR MAKING CARBON BLACK COMPRISING: (A) ELECTRICALLY INDUCING HEATING OF A STREAM OF AN INERT GAS TO A THERMAL PLASMA STATE OF AT LEAST ABOUT ONE ATMOSPHERE PRESSURE WHEREIN FROM ABOUT 10 TO ABOUT 50% OF SAID GAS IS IN AN IONIZED STATE, THEREBY FORMING A ZONE SUITABLE FOR CARRYING OUT HIGH TEMPERATURE REACTIONS AND (B) CONTINUOUSLY FEEDING A HALOGENATED CARBON CONPOUND INTO SAID ZONE, THEREBY CAUSING THE DECOMPOSITION OF SAID COMPOUND TO FORM CARBON BLACK.
References Cited (Backward Citations)
US2919370A
Cited
US3009783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |