US2569671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of crude alcohols
Assignee: Cities Service Oil Co
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Filing: 1948-07-16
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Granted: 1951-10-02
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Expires: 1968-07-16
Abstract
No abstract record available.
Inventors
- 👤 William B Hughes
- 👤 Newcombe Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:59
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/88; C07C29/90; C12; C12C; C12C11/00; C12C11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE PROCESS OF PURIFYING CRUDE ALCOHOL SOLUTIONS COMPRISING TREATING AN AQUEOUS CRUDE ALCOHOL SOLUTION CONTAINING CARBONYL AND ACETAL IMPURITIES WITH HYDROGEN AT TEMPERATURE OF FROM ABOUT 100* C. TO ABOUT 250* C. AND AT A PRESSURE OF FROM ABOUT 500 P.S.I. G. TO 3000 P.S.I.G. IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PLATINIZED NICKEL, SUPPORTED NICKEL, RANEY NICKEL, PALLADINIZED NICKEL, PLATINUM BLACK, PALLADIUM BLACK, COPPER CHROMITE, COLBALT CHROMITE, AND IRON CHROMITE, AND IN THE PRESENCE OF FROM ABOUT 0.005 TO ABOUT 1.0 PER CENT OF A MINERAL ACID FROM THE GROUP CONSISTING OF SULFURIC AND PHOSPHORIC ACIDS.
Claim 2
Dependent Claim
102 words
THE PROCESS OF PURIFYING CRUDE ALCOHOL SOLUTIONS COMPRISING TREATING AN AQUEOUS CRUDE ALCOHOL SOLUTION CONTAINING CARBONYL AND ACETAL IMPURITIES WITH HYDROGEN AT TEMPERATURE OF FROM ABOUT 100* C. TO ABOUT 250* C. AND AT A PRESSURE OF FROM ABOUT 500 P.S.I. G. TO 3000 P.S.I.G. IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PLATINIZED NICKEL, SUPPORTED NICKEL, RANEY NICKEL, PALLADINIZED NICKEL, PLATINUM BLACK, PALLADIUM BLACK, COPPER CHROMITE, COLBALT CHROMITE, AND IRON CHROMITE, AND IN THE PRESENCE OF FROM ABOUT 0.005 TO ABOUT 1.0 PER CENT OF A MINERAL ACID FROM THE GROUP CONSISTING OF SULFURIC AND PHOSPHORIC ACIDS.
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) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |