Patent US969502A successfully refreshed from Google Patents.
Patent JPS52651A successfully refreshed from Google Patents.
Patent US2800517A successfully refreshed from Google Patents.
US2800517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing butadiene
Assignee: Publicker Ind Inc
•
Filing: 1953-06-26
•
Granted: 1957-07-23
•
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
2026-10-27 08:41
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
50 words
A PROCESS FOR THE DIRECT CATALYSTIC CONVERSION OF ETHYL ALCOHOL TO BUTADIENE COMPRISING CONTACTING ETHYL ALCOHOL AT AN ELEVATED TEMPERATURE WITH A CATALYST COMPRISING A MINOR WEIGHT PERCENTAGE, SUFFICIENT TO CONFER IMPROVED CATALYSTIC CONVERSION CHARACTERISTICS FOR CATALYZING THE DIRECT CONVERSION OF ETHYL ALCOHOL TO BUTADIENE, OF A PHOSPHATE OF CALCIUM.
Claim 2
Dependent Claim
50 words
A PROCESS FOR THE DIRECT CATALYSTIC CONVERSION OF ETHYL ALCOHOL TO BUTADIENE COMPRISING CONTACTING ETHYL ALCOHOL AT AN ELEVATED TEMPERATURE WITH A CATALYST COMPRISING A MINOR WEIGHT PERCENTAGE, SUFFICIENT TO CONFER IMPROVED CATALYSTIC CONVERSION CHARACTERISTICS FOR CATALYZING THE DIRECT CONVERSION OF ETHYL ALCOHOL TO BUTADIENE, OF A PHOSPHATE OF CALCIUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |