US2805262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for ether purification
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-03-10
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Granted: 1957-09-03
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Expires: 1975-03-10
Abstract
No abstract record available.
Inventors
- 👤 Elaine T Delaune
- 👤 Samuel W Wilson
- 👤 Jr Samuel J Mayeux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:31
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/34; C07C41/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN IMPROVEMENT PROCESS FOR PURIFYING A CRUDE ALKYL ETHER CONTAMINATED WITH FOREIGN ODOR-IMPARTING CONTAMINANTS WHICH COMPRISES CONTACTING SAID ETHER IN THE PRESENCE OF A PRIMATY ALCOHOL WITH A SOLUTION OF AN ALKALI PLUMBITE, SAID ALCOHOL AND ALKALI PLUMBITE BEING PRESENT IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY FREE THE ETHER FROM SAID FOREIGN ODORS AND THEREAFTER DISTILLING SAID TREATED ETHER.
Claim 2
Dependent Claim
59 words
AN IMPROVEMENT PROCESS FOR PURIFYING A CRUDE ALKYL ETHER CONTAMINATED WITH FOREIGN ODOR-IMPARTING CONTAMINANTS WHICH COMPRISES CONTACTING SAID ETHER IN THE PRESENCE OF A PRIMATY ALCOHOL WITH A SOLUTION OF AN ALKALI PLUMBITE, SAID ALCOHOL AND ALKALI PLUMBITE BEING PRESENT IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY FREE THE ETHER FROM SAID FOREIGN ODORS AND THEREAFTER DISTILLING SAID TREATED ETHER.
References Cited (Backward Citations)
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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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |