Patent US3364124A successfully refreshed from Google Patents.
US3364124A
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US
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Fractional distillation column having changing multi-liquid path flow
Assignee: Phillips Petroleum Co
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Filing: 1965-01-11
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Granted: 1968-01-16
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Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 Harry L Walker
- 👤 Golden A Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:14
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA541010A
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US1811247A
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US1938247A
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US2045518A
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US2202071A
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US2646977A
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DE1010502B
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US2973189A
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US3053521A
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US3162700A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |