Patent US3411992A successfully refreshed from Google Patents.
US3411992A
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US
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Distillation utilizing a vapor compressor and an immiscible liquidsolid medium
Assignee: Electronic Associates Inc
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Filing: 1967-12-11
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Granted: 1968-11-19
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Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Ewart E L Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:10
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/10; C02F1/16; Y; Y10; Y10S; Y10S159/00; Y10S159/17; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2921004A
Cited
GB841374A
Cited
US2976224A
Cited
US3032482A
Cited
US3232847A
Cited
US3236747A
Cited
US3298932A
Cited
US3219554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |