US2704747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of catalysts
Assignee: Universal Oil Products Co
•
Filing: 1949-07-29
•
Granted: 1955-03-22
•
Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
- 👤 Mitchell S Bielawski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:50
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; B01J27/185; B01J27/1853; C07C2521/00; C07C2521/06; C07C2521/08; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/75; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR MANUFACTURING A SOLID CATALYST WHICH COMPRISES MIXING FROM ABOUT 50 TO ABOUT 75% BY WEIGHT OF A POLYPHOSPHORIC ACID. FROM ABOUT 15 TO ABOUT 49.5% BY WEIGHT OF DIATOMACEOUS EARTH. AND FROM ABOUT 0.5 TO ABOUT 10% BY WEIGHT OF COBALTIC OXIDE AT A TEMPERATURE OF FROM ABOUT 50* TO ABOUT 450*F. TO FORM A COMPOSITE, SHAPING SAID COMPOSITE INTO PARTICLES. DRYING SAID PARTICLES AT A TEMPERATURE OF FROM ABOUT 200* TO ABOUT 500*F., AND CALCING THE DRIED PARTICLES AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1000*F. FOR A TIME OF FROM ABOUT 0.25 TO ABOUT 10 HOURS.
Claim 2
Dependent Claim
103 words
A PROCESS FOR MANUFACTURING A SOLID CATALYST WHICH COMPRISES MIXING FROM ABOUT 50 TO ABOUT 75% BY WEIGHT OF A POLYPHOSPHORIC ACID. FROM ABOUT 15 TO ABOUT 49.5% BY WEIGHT OF DIATOMACEOUS EARTH. AND FROM ABOUT 0.5 TO ABOUT 10% BY WEIGHT OF COBALTIC OXIDE AT A TEMPERATURE OF FROM ABOUT 50* TO ABOUT 450*F. TO FORM A COMPOSITE, SHAPING SAID COMPOSITE INTO PARTICLES. DRYING SAID PARTICLES AT A TEMPERATURE OF FROM ABOUT 200* TO ABOUT 500*F., AND CALCING THE DRIED PARTICLES AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1000*F. FOR A TIME OF FROM ABOUT 0.25 TO ABOUT 10 HOURS.
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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) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |