US2551014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of catalysts containing silica and alumina or magnesia or both
Assignee: Standard Oil Development Co
•
Filing: 1946-05-15
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Granted: 1951-05-01
•
Expires: 1966-05-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles N Kimberlin
- 👤 Julius P Bilisoly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:25
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/14; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
PROCESS FOR THE PREPARATION OF A CRACKING CATALYST COMPRISING SILICA IN THE FORM OF MICROSPHERES WHICH COMPRISES PREPARING AN ACIDIC SILICA HYDROSOL, ADDING THERETO AN AQUEOUS SLURRY OF MAGNESIA IN EXCESS OVER THAT REQUIRED TO NEUTRALIZE THE ACIDIC HYDROSOL, RAPIDLY DISPERSING THE RESULTANT MIXTURE AS MICROSPHERICAL PARTICLES IN A BATH OF MINERAL OIL, MAINTAINING SAID PARTICLES DISPERSED IN SAID MINERAL OIL UNTIL THEY HAVE SET TO SILICA-MAGNESIA HYDROGEL MICROSPHERES, REMOVING SAID HYDROGEL MICROSPHERES FROM SAID MINERAL OIL, WASHING, DRYING AND RECOVERING SAID MICROSPHERES.
Claim 2
Dependent Claim
83 words
PROCESS FOR THE PREPARATION OF A CRACKING CATALYST COMPRISING SILICA IN THE FORM OF MICROSPHERES WHICH COMPRISES PREPARING AN ACIDIC SILICA HYDROSOL, ADDING THERETO AN AQUEOUS SLURRY OF MAGNESIA IN EXCESS OVER THAT REQUIRED TO NEUTRALIZE THE ACIDIC HYDROSOL, RAPIDLY DISPERSING THE RESULTANT MIXTURE AS MICROSPHERICAL PARTICLES IN A BATH OF MINERAL OIL, MAINTAINING SAID PARTICLES DISPERSED IN SAID MINERAL OIL UNTIL THEY HAVE SET TO SILICA-MAGNESIA HYDROGEL MICROSPHERES, REMOVING SAID HYDROGEL MICROSPHERES FROM SAID MINERAL OIL, WASHING, DRYING AND RECOVERING SAID MICROSPHERES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |