US2579601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin hydration process
Assignee: Shell Development Co
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Filing: 1950-08-16
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Granted: 1951-12-25
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Expires: 1970-08-16
Abstract
No abstract record available.
Inventors
- 👤 Charles R Nelson
- 👤 Marlon A D Taylor
- 👤 Donald D Davidson
- 👤 Leslie M Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:17
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/03; C07C29/04; C07C29/05; C07C29/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A PROCESS FOR PRODUCING ALCOHOLS BY THE DIRECT HYDRATION OF OLEFINS WHEREBY A GASEOUS MIXTURE OF OLEFIN AND WATER VAPOR, AT ELEVATED TEMPERATURE AND PRESSURE, IS CONTINUOUSLY PASSED THROUGH A CATALYST BED COMPRISING PHOSPHORIC ACID ABSORBED WITHIN A SOLID POROUS SUPPORT, WHICH BED IS FREE OF SUBSTANTIALLY ALL SEEPAGE OF PHOSPHORIC ACID, THE STEP COMPRISING ADDING A SOLUTION OF FREE PHOSPHORIC ACID TO THE SUPPORT AS THE HYDRATION OPERATION CONTINUES, TO MAKE UP FOR THE AMOUNT OF PHOSPHORIC ACID WHICH IS LOST FROM THE SUPPORT AS A RESULT OF PASSING THE GASEOUS FEED MIXTURE THERETHROUGH, THE AMOUNT OF PHOSPHORIC ACID ADDED IN THIS FASHION NOT EXCEEDING ONE POUND (CALCULATED AS 100% H3PO4) FOR EACH 100 POUNDS OF ALCOHOL PRODUCED.
Claim 2
Dependent Claim
120 words
IN A PROCESS FOR PRODUCING ALCOHOLS BY THE DIRECT HYDRATION OF OLEFINS WHEREBY A GASEOUS MIXTURE OF OLEFIN AND WATER VAPOR, AT ELEVATED TEMPERATURE AND PRESSURE, IS CONTINUOUSLY PASSED THROUGH A CATALYST BED COMPRISING PHOSPHORIC ACID ABSORBED WITHIN A SOLID POROUS SUPPORT, WHICH BED IS FREE OF SUBSTANTIALLY ALL SEEPAGE OF PHOSPHORIC ACID, THE STEP COMPRISING ADDING A SOLUTION OF FREE PHOSPHORIC ACID TO THE SUPPORT AS THE HYDRATION OPERATION CONTINUES, TO MAKE UP FOR THE AMOUNT OF PHOSPHORIC ACID WHICH IS LOST FROM THE SUPPORT AS A RESULT OF PASSING THE GASEOUS FEED MIXTURE THERETHROUGH, THE AMOUNT OF PHOSPHORIC ACID ADDED IN THIS FASHION NOT EXCEEDING ONE POUND (CALCULATED AS 100% H3PO4) FOR EACH 100 POUNDS OF ALCOHOL PRODUCED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |