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US3402124A
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US
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Plural stage distillation with bottoms stream and side stream column heat exchange
Assignee: Universal Oil Products Co
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Filing: 1966-03-16
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Granted: 1968-09-17
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Expires: 1986-03-16
Abstract
No abstract record available.
Inventors
- 👤 Walter T Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:17
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/14; B01D3/32; B01D3/322; C; C10; C10G; C10G7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB239208A
Cited
US1851743A
Cited
US2032666A
Cited
US2073953A
Cited
US2057004A
Cited
US2717232A
Cited
US2954341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |