US3247003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of carbon black oxidation
Assignee: Phillips Petroleum Co
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Filing: 1962-06-11
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Granted: 1966-04-19
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Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Lyle W Pollock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:22
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/565; C01; C01P; C01P2006/00; C01P2006/12; C01P2006/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR THE OXIDATION OF PARTICULATE CARBON BLACK TO REDUCE THE PH THEREOF, WHICH COMPRISE: CONTACTING SAID BLACK WITH AN OXIDIZING AGENT UNDER CONDITIONS TO PRODUCE A PH REDUCTION; CONTINUOUSLY SAMPLING THE OXIDIZED CARBON BLACK PRODUCT BY WITHDRAWING A PROTION THEREOF; CONTINUOUSLY SEPARATING THE WITHDRAWN PORTION FROM FLUID ASSOCIATED THEREWITH; CONINUOUSLY PASSING THE SEPARATED, WITHDRAWN PORTION INTO A PURGING ZONE; CONTINUOUSLY PURGING THE WITHDRAWN AND SEPARATED PORTION IN SAID PURGE ZONE WITH AN INERT GAS; CONTINUOUSLY SLURRYING THE WITHDRAWN, SEPARATED AND PURGED PORTION WITH WATER; CONTINUOUSLY ANALYZING THE RESULTING SLURRY FOR PH; AND CONTROLLING THE OXIDANT SUPPLIED TO SAID CARBON BLACK RESPONSIVE TO THE PH VALUE OF SAID SLURRY TO MAINTAIN SAID PH VALUE AT A DESIRED LEVEL.
Claim 2
Dependent Claim
119 words
A PROCESS FOR THE OXIDATION OF PARTICULATE CARBON BLACK TO REDUCE THE PH THEREOF, WHICH COMPRISE: CONTACTING SAID BLACK WITH AN OXIDIZING AGENT UNDER CONDITIONS TO PRODUCE A PH REDUCTION; CONTINUOUSLY SAMPLING THE OXIDIZED CARBON BLACK PRODUCT BY WITHDRAWING A PROTION THEREOF; CONTINUOUSLY SEPARATING THE WITHDRAWN PORTION FROM FLUID ASSOCIATED THEREWITH; CONINUOUSLY PASSING THE SEPARATED, WITHDRAWN PORTION INTO A PURGING ZONE; CONTINUOUSLY PURGING THE WITHDRAWN AND SEPARATED PORTION IN SAID PURGE ZONE WITH AN INERT GAS; CONTINUOUSLY SLURRYING THE WITHDRAWN, SEPARATED AND PURGED PORTION WITH WATER; CONTINUOUSLY ANALYZING THE RESULTING SLURRY FOR PH; AND CONTROLLING THE OXIDANT SUPPLIED TO SAID CARBON BLACK RESPONSIVE TO THE PH VALUE OF SAID SLURRY TO MAINTAIN SAID PH VALUE AT A DESIRED LEVEL.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |