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Patent US2604485A successfully refreshed from Google Patents.
US2604485A
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Method for purifying cuprous ammonium acetate solvent
Assignee: Standard Oil Development Co
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Filing: 1948-11-27
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Granted: 1952-07-22
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Expires: 1968-11-27
Abstract
No abstract record available.
Inventors
- 👤 John D Booker
- 👤 William M Harp
- 👤 Edward F Wadley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:24
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11; C01; C01G; C01G3/00; C01G3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A CONTINUOUS PROCESS IN WHICH AQUEOUS CUPROUS AMMONIUM ACETATE SOLUTION IS CONTACTED WITH A HDYROCARBON FRACTION CONTAINING DIOLEFINS, ACETYLENES AND OXYGENATED ORGANIC COMPOUNDS TO ABSORB DIOLEFIN FROM THE HYDROCARBON FRACTION AND IN WHICH AN AQUEOUS CUPROUS AMMONIUM ACETATE SOLUTION CONTAMINATED BY SUCH CONTACT WITH FOAM-INDUCING ORGANIC IMPURITIES SOLUBLE IN MONO-HYDROXY ALKANOLS IS SEPARATED FROM CONTACT WITH SAID HYDROCARBON FRACTION, THE STEPS OF SCRUBBING THE CONTAMINATED AQUEOUS SOLUTION WITH A MONO-HYDROXY ALKANOL HAVING FROM FIVE TO NINE CARBON ATOMS IN THE MOLECULE, WASHING THE SCRUBBED AQUEOUS SOLUTION WITH A LOW MOLECULAR WEIGHT HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ALKANES AND MONO-OLEFINIC ALKENES TO REMOVE TRACES OF THE ALKANOL FROM THE SCRUBBED SOLUTION, AND THEN EMPLOYING THE SCRUBBED AND WASHED SOLUTION TO CONTACT ADDITIONAL AMOUNTS OF SAID HYDROCARBON FRACTION TO ABSORB DIOLEFIN THEREFROM.
Claim 2
Dependent Claim
133 words
IN A CONTINUOUS PROCESS IN WHICH AQUEOUS CUPROUS AMMONIUM ACETATE SOLUTION IS CONTACTED WITH A HDYROCARBON FRACTION CONTAINING DIOLEFINS, ACETYLENES AND OXYGENATED ORGANIC COMPOUNDS TO ABSORB DIOLEFIN FROM THE HYDROCARBON FRACTION AND IN WHICH AN AQUEOUS CUPROUS AMMONIUM ACETATE SOLUTION CONTAMINATED BY SUCH CONTACT WITH FOAM-INDUCING ORGANIC IMPURITIES SOLUBLE IN MONO-HYDROXY ALKANOLS IS SEPARATED FROM CONTACT WITH SAID HYDROCARBON FRACTION, THE STEPS OF SCRUBBING THE CONTAMINATED AQUEOUS SOLUTION WITH A MONO-HYDROXY ALKANOL HAVING FROM FIVE TO NINE CARBON ATOMS IN THE MOLECULE, WASHING THE SCRUBBED AQUEOUS SOLUTION WITH A LOW MOLECULAR WEIGHT HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ALKANES AND MONO-OLEFINIC ALKENES TO REMOVE TRACES OF THE ALKANOL FROM THE SCRUBBED SOLUTION, AND THEN EMPLOYING THE SCRUBBED AND WASHED SOLUTION TO CONTACT ADDITIONAL AMOUNTS OF SAID HYDROCARBON FRACTION TO ABSORB DIOLEFIN THEREFROM.
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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |