US2807655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydration of olefins over tungstic acid-alumina catalysts
Assignee: Imperial Chemical Industries Ltd
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Filing: 1953-10-30
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Granted: 1957-09-24
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Expires: 1973-10-30
Abstract
No abstract record available.
Inventors
- 👤 Pittwell Laurence Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:53
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR THE DIRECT CATALYTIC HYDRATION OF OLEFINES WHICH COMPRISES THE STEP OF CONTACTING ON OLEFINE WITH LIQUID WATER AT AN ELEVATED TEMPERATURE FROM 160* TO 350*C. AND PRESSURE FROM 200 TO 500 ATMOSPHERE IN THE PRESENCE OF A CATALYST COMPRISING TUNGSTIC ACID AND 0.01% TO 10% BY WEIGHT OF ALUMINA IN INTIMATE ADMIXTURE THEREWITH, SAID CATALYST HAVING BEEN FORMED INTO PELLETS AND SUBJECTED TO A PRESSURE FROM ABOUT 50 TO ABOUT 60 TONS PER SQUARE INCH.
Claim 2
Dependent Claim
78 words
A PROCESS FOR THE DIRECT CATALYTIC HYDRATION OF OLEFINES WHICH COMPRISES THE STEP OF CONTACTING ON OLEFINE WITH LIQUID WATER AT AN ELEVATED TEMPERATURE FROM 160* TO 350*C. AND PRESSURE FROM 200 TO 500 ATMOSPHERE IN THE PRESENCE OF A CATALYST COMPRISING TUNGSTIC ACID AND 0.01% TO 10% BY WEIGHT OF ALUMINA IN INTIMATE ADMIXTURE THEREWITH, SAID CATALYST HAVING BEEN FORMED INTO PELLETS AND SUBJECTED TO A PRESSURE FROM ABOUT 50 TO ABOUT 60 TONS PER SQUARE INCH.
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |