US2575457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phosphoric acid catalyst on a precalcined silico-phosphoric acid base
Assignee: Universal Oil Products Co
•
Filing: 1949-12-22
•
Granted: 1951-11-20
•
Expires: 1969-12-22
Abstract
No abstract record available.
Inventors
- 👤 Julian M Mavity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:14
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR MANUFACTURING A SOLID CATALYST WHICH COMPRISES MIXING AN OXYGEN ACID OF PHOSPHORUS WITH A SILICEOUS ADSORBENT TO FORM A COMPOSITE, CALCINING SAID COMPOSITE AT A TEMPERATURE OF FROM ABOUT 900* F. TO ABOUT 1100* F. TO FORM A SOLID CALCINED COMPOSITE, IMPREGNATING SAID CALCINED COMPOSITE WITH AN OXYGEN ACID OF PHOSPHORUS TO FORM A PHOSPHORIC ACID COATED COMPOSITE, AND CALCINING SAID PHOSPHORIC ACID COATED COMPOSITE AT A TEMPERATURE BELOW ABOUT 900* F. TO FORM A STRUCTURALLY STRONG CATALYTIC MATERIAL HAVING HIGH HYDROCARBON CONVERSION ACTIVITY.
Claim 2
Dependent Claim
87 words
A PROCESS FOR MANUFACTURING A SOLID CATALYST WHICH COMPRISES MIXING AN OXYGEN ACID OF PHOSPHORUS WITH A SILICEOUS ADSORBENT TO FORM A COMPOSITE, CALCINING SAID COMPOSITE AT A TEMPERATURE OF FROM ABOUT 900* F. TO ABOUT 1100* F. TO FORM A SOLID CALCINED COMPOSITE, IMPREGNATING SAID CALCINED COMPOSITE WITH AN OXYGEN ACID OF PHOSPHORUS TO FORM A PHOSPHORIC ACID COATED COMPOSITE, AND CALCINING SAID PHOSPHORIC ACID COATED COMPOSITE AT A TEMPERATURE BELOW ABOUT 900* F. TO FORM A STRUCTURALLY STRONG CATALYTIC MATERIAL HAVING HIGH HYDROCARBON CONVERSION ACTIVITY.
References Cited (Backward Citations)
US2324079A
Cited
US2415951A
Cited
US2355868A
Cited
US2347955A
Cited
US2275182A
Cited
US2394678A
Cited
US2496621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |