Patent US4581957A successfully refreshed from Google Patents.
Patent US2942299A successfully refreshed from Google Patents.
US2942299A
Expired / Lapsed
US
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Process of making oiled carbon black pellets
Assignee: Phillips Petroleum Co
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Filing: 1955-12-27
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Granted: 1960-06-28
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Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Harold A Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:58
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2004/00; C01P2004/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
A PROCESS FOR PRODUCING OILED CARBON BLACK PELLETS OF A NARROW RANGE OF OIL CONCENTRATION FROM A MASS OF PELLETS OF A WIDE RANGE OF SIZES WHICH ABSORB OIL IN DIFFERENT CONCENTRATIONS IN ACCORDANCE WITH SIZE, EVEN WHEN SUBJECTED TO UNIFORM CONTACTING WITH OIL, WHICH COMPRISES UNIFORMLY CONTACTING SAID MASS OF PELLETS WITH OIL TO INCORPORATE APPROXIMATELY THE DESIRED CONCENTRATION OF OIL THEREIN, AND RECOVERING FROM THE MASS OF OILED PELLETS A NARROW SIZE RANGE WHICH CONTAINS THE DESIRED NARROW RANGE OF OIL CONCENTRATION.
References Cited (Backward Citations)
US1651733A
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US2078359A
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US2411873A
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US2461089A
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US2548332A
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US2693018A
Cited
US2699381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |