US3666633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of chlorinated alkane solvent
Assignee: EIDP Inc
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Filing: 1969-10-28
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Granted: 1972-05-30
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Expires: 1989-10-28
Abstract
Abstract AN APPARATUS FOR RECOVERY OF ORGANIC SOLVENTS AT LEAST PARTIALLY IMMISCIBLE WITH WATER FROM MIXTURES, THE APPARATUS HAVING (A) A VESSEL FREE FROM HEATING SURFACES, (B) MEANS FOR SUPPLYING STEAM INTO THE VESSEL, (C) EXIT MEANS FOR THE STEAM AND SOLVENT, (D) CONSENSER FOR STEAM AND SOLVENT, AND (E) A DECANTER FOR SEPARATING WATER AND SOLVENT; THE APPARATUS HAVING ELECTRICAL MEANS FOR AUTOMATICALLY AND SEQUENTIALLY SUPPLYING THE MIXTURE, INJECTING STEAM INTO THE MIXTURE, AND ENDING THE INJECTION UPON MAXIUM SOLVENT RECOVERY, AS INDICATED BY TEMPERATURE ABOVE THE VESSEL.
Inventors
- 👤 Andrew Michael Essex
- 👤 Robert Bernard Heiart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:20
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/34; B01D3/38; Y; Y10; Y10S; Y10S159/00; Y10S159/25; Y10S203/00; Y10S203/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |