US2694048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of improved solid catalysts
Assignee: Universal Oil Products Co
•
Filing: 1950-03-18
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Granted: 1954-11-09
•
Expires: 1970-03-18
Abstract
No abstract record available.
Inventors
- 👤 Mitchell S Bielawski
- 👤 Julian M Mavity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:11
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR MANUFACTURING AN IMPROVED SOLID CATALYST WHICH COMPRISES MIXING FROM ABOUT 60 TO ABOUT 80 PER CENT BY WEIGHT OF AN OXYGEN ACID OF PHOSPHORUS WITH FROM ABOUT 40 TO ABOUT 20 PER CENT BY WEIGHT OF A SOLID CARRIER CONSISTING OF FROM ABOUT 1 TO ABOUT 3 PARTS BY WEIGHT OF DIATOMACEOUS EARTH AND FROM ABOUT 3 TO ABOUT 1 PARTS BY WEIGHT OF A SOLID CARBONACEOUS MATERIAL SELECTED FROM THE MEMBERS OF THE GROUP CONSISTING OF LAMPBLACK, GRAPHITE, CHARCOAL, COKE, AND POWDERED COAL TO FORM A COMPOSITE, SHAPING SAID COMPOSITE INTO PARTICLES, AND CALCINING SAID PARTICLES AT A TEMPERATURE OF FROM ABOUT 850* TO ABOUT 1200* F.
Claim 2
Dependent Claim
111 words
A PROCESS FOR MANUFACTURING AN IMPROVED SOLID CATALYST WHICH COMPRISES MIXING FROM ABOUT 60 TO ABOUT 80 PER CENT BY WEIGHT OF AN OXYGEN ACID OF PHOSPHORUS WITH FROM ABOUT 40 TO ABOUT 20 PER CENT BY WEIGHT OF A SOLID CARRIER CONSISTING OF FROM ABOUT 1 TO ABOUT 3 PARTS BY WEIGHT OF DIATOMACEOUS EARTH AND FROM ABOUT 3 TO ABOUT 1 PARTS BY WEIGHT OF A SOLID CARBONACEOUS MATERIAL SELECTED FROM THE MEMBERS OF THE GROUP CONSISTING OF LAMPBLACK, GRAPHITE, CHARCOAL, COKE, AND POWDERED COAL TO FORM A COMPOSITE, SHAPING SAID COMPOSITE INTO PARTICLES, AND CALCINING SAID PARTICLES AT A TEMPERATURE OF FROM ABOUT 850* TO ABOUT 1200* F.
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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) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |