US3035901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of graphite with chlorinated hydrocarbons
Assignee: GREAT LAKES CARBON Corp
•
Filing: 1959-04-02
•
Granted: 1962-05-22
•
Expires: 1979-04-02
Abstract
No abstract record available.
Inventors
- 👤 Best Bushnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043; C01; C01B; C01B32/00; C01B32/20; C01B32/21; C01B32/215; C25B11/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR PURIFYING ARTIFICAL GRAPHITE BODIES CONTAINING METALLIC CARBIDE IMPURITIES INCLUDING VANADIUM CARBIDE COMPRISING PACKING SAID BODIES IN COKE PARTICLES AND A CHLORINATED HYDROCARBON HAVING A BOILING POINT ABOVE ABOUT 200*C. AND THEN HEATING THE PACKED BODIES TO A TEMPERATURE SUFFICIENTLY HIGH TO IMPREGNATE SAID GRAPHITE BODIES WITH THE CHLORINATED HYDROCARBON AND GRAPHIC BODIES WITH THE CHLORINATED HYDROCARBON AND FROM AND VOLTATILIZE CHLORIDES OF SAID IMPURITIES.
Claim 2
Dependent Claim
67 words
A PROCESS FOR PURIFYING ARTIFICAL GRAPHITE BODIES CONTAINING METALLIC CARBIDE IMPURITIES INCLUDING VANADIUM CARBIDE COMPRISING PACKING SAID BODIES IN COKE PARTICLES AND A CHLORINATED HYDROCARBON HAVING A BOILING POINT ABOVE ABOUT 200*C. AND THEN HEATING THE PACKED BODIES TO A TEMPERATURE SUFFICIENTLY HIGH TO IMPREGNATE SAID GRAPHITE BODIES WITH THE CHLORINATED HYDROCARBON AND GRAPHIC BODIES WITH THE CHLORINATED HYDROCARBON AND FROM AND VOLTATILIZE CHLORIDES OF SAID IMPURITIES.
References Cited (Backward Citations)
US1303362A
Cited
US2734800A
Cited
US2260746A
Cited
US2315346A
Cited
GB748018A
Cited
US2914383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |