Patent US2686107A successfully refreshed from Google Patents.
US2686107A
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Process of making nonscorching carbon black
Assignee: Godfrey L Cabot Inc
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Filing: 1948-10-23
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Granted: 1954-08-10
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Expires: 1968-10-23
Abstract
No abstract record available.
Inventors
- 👤 Merrill E Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:13
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/565; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/12; C01P2006/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
A PROCESS OF MAKING FURNACE CARBON BLACK NON-SCORCHING IN RUBBER COMPOUNDING AND CONVERTING IT INTO FREE-FLOWING DUSTLESS PELLETS IN ONE AND THE SAME OPERATION, WHICH IS CHARACTERIZED BY THE STEPS OF AGITATING FLOCCULENT FURNACE CARBON BLACK HAVING AN INITIAL VOLATILE CONTENT OF 0.5% TO 0.8% WHILE ADDING THERETO AN AQUEOUS SOLUTION CONTAINING 5 TO 25 PER CENT BY WEIGHT OF NITRIC ACID IN AN AMOUNT BETWEEN 40 TO 100% OF THE WEIGHT OF THE DRY FURNACE CARBON BLACK, THEREBY INCREASING THE VOLATILE CONTENT OF THE CARBON BLACK AND AT THE SAME TIME CONVERTING IT INTO THE FORM OF DISCRETE WET PELLETS, AND THEN TERMINATING THE INCREASE OF VOLATILE CONTENT IN THE CARBON BLACK AT 1 TO 3% BY DRYING THE WET PELLETS AND REMOVING FREE GASES FROM THE DIRED PELLETS BY HEATING TO A TEMPERATURE OF 250* TO 650* F.
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) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |