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US3404175A
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US
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Process for forming and separating ethers or esters by plural stage distillation with removal of water as an azeotrope
Assignee: Usines de Melle SA
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Filing: 1965-03-04
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Granted: 1968-10-01
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Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Mercier Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:43
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/48; C07C67/52; C07C67/54; C07C67/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1536544A
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US1988801A
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US2311180A
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US2407920A
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US2485329A
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US2759967A
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US2787636A
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US2865955A
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US2805262A
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US2862962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |