Patent US2901324A successfully refreshed from Google Patents.
US2901324A
Expired / Lapsed
US
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Oil seal for electro-precipitators employed in carbon black processes
Assignee: Phillips Petroleum Co
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Filing: 1952-12-12
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Granted: 1959-08-25
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Expires: 1972-12-12
Abstract
No abstract record available.
Inventors
- 👤 Robert C Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:21
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/70
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
A METHOD FOR OPERATING A FURNACE CARBON BLACK PRODUCTION OPERATION WHEREIN CARBON BLACK IS RECOVERED FROM FURNACE EFFUENTS IN A HIGH POTENTIAL ELECTRO-PRECIPITATOR, THE IMPROVEMENT COMPRISING INTRODUCING CARBON BLACK FURNACE CHARGE OIL INTO AN OIL SEAL ZONE IN LIQUID SEALING RELATION BETWEEN THE ELECTRICAL PRECIPITATION ZONE AND THE HIGH POTENTIAL ELECTRICAL TERMINAL CONTAINING ZONE OF SIAD PRECIPITATOR, WITHDRAWING CHARGE OIL COMPRISING THE OIL WITHZONE AND INTRODUCING CHARGE OIL COMPRISING THE OIL WITHDRAWN FROM SAID OIL SEAL ZONE INTO THE CARBON BLACK PRODUCTION FURNACE OF SAID FURNACE CARBON BLACK PRODUCTION OPERATION.
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |