US2636057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration of alcohols to olefins
Assignee: Phillips Petroleum Co
•
Filing: 1949-08-23
•
Granted: 1953-04-21
•
Expires: 1969-08-23
Abstract
No abstract record available.
Inventors
- 👤 Haskell W Cutcher
- 👤 Charles A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:16
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C1/24; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/16; C07C2523/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
A CATALYST COMPOSITION COMPRISING A PHYSICAL ADMIXTURE OF A MAJOR PORTION OF AN ACTIVATED ALUMINA SELECTED FROM THE GROUP CONSISTING OF ALUMINA ALPHA MONOHYDRATE AND GAMMA ALUMINA AND A MINOR PORTION OF RED BAUXITE HAVING THE FOLLOWING COMPOSITIONS EXPRESSED AS PER CENT BY WEIGHT
Claim 2
Dependent Claim
44 words
A CATALYST COMPOSITION COMPRISING A PHYSICAL ADMIXTURE OF A MAJOR PORTION OF AN ACTIVATED ALUMINA SELECTED FROM THE GROUP CONSISTING OF ALUMINA ALPHA MONOHYDRATE AND GAMMA ALUMINA AND A MINOR PORTION OF RED BAUXITE HAVING THE FOLLOWING COMPOSITIONS EXPRESSED AS PER CENT BY WEIGHT
Claim 3
Dependent Claim
68 words
IN A PROCESS FOR DEHYDRATING AN ALIPHATIC ALCOHOL TO PREFERENTIALLY PRODUCE A 1-OLEFIN THE IMPROVEMENT WHICH COMPRISES DEHYDRATING AN ALCOHOL CORRESPONDING TO SAID 1-OELFIN IN THE PRESENCE OF A CATALYST COMPRISING A MAJOR PORTION OF AN ACTIVATED ALUMINA SELECTED FRO THE GROUP CONSISTING OF ALUMINA ALPHA MONOHYDRATE AND GAMMA ALUMINA AND A MINOR PORTION OF RED BAUXITE HAVING THE FOLLOWING COMPOSITIONS AS EXPRESSED AS PER CENT BY WEIGHT
Claim 4
Dependent Claim
68 words
IN A PROCESS FOR DEHYDRATING AN ALIPHATIC ALCOHOL TO PREFERENTIALLY PRODUCE A 1-OLEFIN THE IMPROVEMENT WHICH COMPRISES DEHYDRATING AN ALCOHOL CORRESPONDING TO SAID 1-OELFIN IN THE PRESENCE OF A CATALYST COMPRISING A MAJOR PORTION OF AN ACTIVATED ALUMINA SELECTED FRO THE GROUP CONSISTING OF ALUMINA ALPHA MONOHYDRATE AND GAMMA ALUMINA AND A MINOR PORTION OF RED BAUXITE HAVING THE FOLLOWING COMPOSITIONS AS EXPRESSED AS PER CENT BY WEIGHT
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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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |