US2958648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of hydrocarbons with a synthetic silica-alumina-magnesia catalyst composite
Assignee: ChampionX LLC
•
Filing: 1956-11-27
•
Granted: 1960-11-01
•
Expires: 1976-11-27
Abstract
No abstract record available.
Inventors
- 👤 David G Braithwaite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:40
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
A PROCESS FOR CONVERTING HYDROCARBONS WHICH COMPRISES BRINGING A PETROLEUM HYDROCARBON OIL INTO CONTACT WITH A SILICA-ALUMINA-MAGNESIA CATALYST CONSISTING ESSENTIALLY OF 55% TO 85% BY WEIGHT SIO2, 5% TO 40% BY WEIGHT AL2O3 AND 4% TO 30% BY WEIGHT MGO, SAID CATALYST HAVING A PORE VOLUME OF 0.5 TO 1 CC/G., AN AVERAGE PORE DIAMETER OF 40 TO 100 A., AND A SURFACE AREA OF 400 TO 550 M.2/G., UNDER HYDROCARBON CONVERSION CONDITIONS.
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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |