Patent US3306762A successfully refreshed from Google Patents.
US3306762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of carbon black
Assignee: Continental Carbon Co
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Filing: 1965-02-25
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Granted: 1967-02-28
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Expires: 1985-02-25
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Ruble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:49
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C01; C01P; C01P2002/00; C01P2002/50; C01P2002/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR PRODUCING LOW STRUCTURE CARBON BLACK WHICH COMPRISES INJECTING A VAPOROUS HYDROCARBON FEEDSTOCK INTO A REACTION ZONE CONTINUOUSLY MAINTAINED AT A TEMPERATURE SUFFICIENT TO INSTANTANEOUSLY CRACK A MAJOR PORTION OF THE INJECTED SAID STOCK INTO CARBON BLACK WHILE CONCOMITANTLY AND PROPORTIONALLY INTRODUCING INTO SAID REACTION ZONE FROM ABOUT 50 TO 100,000 P.P.M. BASED ON THE WEIGHT OF THE CARBON BLACK YIELD OF A METAL SELECTED FROM THE GROUP CONSISTING OF GALLIUM, INDIUM, ALUMINUM AND MIXTURES THEREOF, COOLING THE EFFLUENT FROM THE REACTION ZONE AND RECOVERING THE CARBON CONTENT THEREOF.
Claim 2
Dependent Claim
91 words
A PROCESS FOR PRODUCING LOW STRUCTURE CARBON BLACK WHICH COMPRISES INJECTING A VAPOROUS HYDROCARBON FEEDSTOCK INTO A REACTION ZONE CONTINUOUSLY MAINTAINED AT A TEMPERATURE SUFFICIENT TO INSTANTANEOUSLY CRACK A MAJOR PORTION OF THE INJECTED SAID STOCK INTO CARBON BLACK WHILE CONCOMITANTLY AND PROPORTIONALLY INTRODUCING INTO SAID REACTION ZONE FROM ABOUT 50 TO 100,000 P.P.M. BASED ON THE WEIGHT OF THE CARBON BLACK YIELD OF A METAL SELECTED FROM THE GROUP CONSISTING OF GALLIUM, INDIUM, ALUMINUM AND MIXTURES THEREOF, COOLING THE EFFLUENT FROM THE REACTION ZONE AND RECOVERING THE CARBON CONTENT THEREOF.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |