US2920049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and method of preparation therefor
Assignee: Publicker Ind Inc
•
Filing: 1953-06-26
•
Granted: 1960-01-05
•
Expires: 1973-06-26
Abstract
No abstract record available.
Inventors
- 👤 Romanovsky Cyril
- 👤 Jordan Thomas Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:51
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1806; C; C07; C07C; C07C1/00; C07C1/20; C07C2521/00; C07C2521/14; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A CATALYST FOR THE DIRECT CATALYTIC CONVERSIOIN OF ETHYL ALCOHOL TO BUTADIENE, COMPRISING A MAJOR WEIGHT PERCENTAGE OF MAGNESIA AND SILICA AND A MINOR WEIGHT PERCENTAGE, SUFFICIENT TO CONFER IMPROVED CATALYTIC CONVERSION CHARACTERISTICS FOR CATALYZING THE DIRECT CONVERSION OF ETHYL ALCOHOL TO BUTADIENE, OF A PHOSPHATE FO CALCIUM.
Claim 2
Dependent Claim
48 words
A CATALYST FOR THE DIRECT CATALYTIC CONVERSIOIN OF ETHYL ALCOHOL TO BUTADIENE, COMPRISING A MAJOR WEIGHT PERCENTAGE OF MAGNESIA AND SILICA AND A MINOR WEIGHT PERCENTAGE, SUFFICIENT TO CONFER IMPROVED CATALYTIC CONVERSION CHARACTERISTICS FOR CATALYZING THE DIRECT CONVERSION OF ETHYL ALCOHOL TO BUTADIENE, OF A PHOSPHATE FO CALCIUM.
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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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |