Patent US3727484A successfully refreshed from Google Patents.
Patent US3587704A successfully refreshed from Google Patents.
US3587704A
Expired / Lapsed
US
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Thin film processing method
Assignee: Artisan Industries Inc
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Filing: 1968-09-05
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Granted: 1971-06-28
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Expires: 1988-09-05
Abstract
Abstract A SODIUM ALKOXIDE-METHANOL SOLUTION IS CONTINUOUSLY CONCENTRATED TO A POWDER IN A HORIZONTALLY AXISED THIN-FILM EVAPORATOR IN A SINGLE PASS. THE VAPOR FLOW IN THE EVAPORATOR IS CONCURRENT AND AIDS IN THE REMOVAL OF THE POWDERED SODIUM ALKOXIDE FROM THE EVAPORATOR WHERE IT IS DISHCARGED INTO A COLLECTION VESSEL. THE CAPOR STREAM WITH ENTRAINED SODIUM ALKOXIDE PARTICLES FLOWS THROUGH A CYCOLONE SEPARATOR WHER THE PARTICLES ARE REMOVED FROM THE METHANOL STREAM. THE REMOVED PARTICLES PASS TO THE COLLECTION VESSEL AND THE METHANOL STREAM IS CONDENSED.
Inventors
- 👤 Leo J Monty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:49
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/28; C07C31/30; B; B01; B01D; B01D1/00; B01D1/22; B01D1/24; C07C29/00; C07C29/74; C07C29/76; F; F26; F26B; F26B17/00; F26B17/18; F26B17/20; F26B25/00; F26B25/005
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |