Patent US3423294A successfully refreshed from Google Patents.
US3423294A
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Vortex flow film distillation process
Assignee: Individual
•
Filing: 1966-11-14
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Granted: 1969-01-21
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Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Hugo H Sephton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:45
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/06; F28F13/12; B; B01; B01D; B01D1/00; B01D1/06; B01D1/10; B01D3/00; B01D3/06; B01D3/065; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US810442A
Cited
US2164274A
Cited
DE1114784B
Cited
DE1061743B
Cited
FR1308577A
Cited
GB942846A
Cited
US3273630A
Cited
FR1348930A
Cited
US3265115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |