Patent US2933901A successfully refreshed from Google Patents.
US2933901A
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Separation of fluid mixtures
Assignee: Phillips Petroleum Co
•
Filing: 1955-12-19
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Granted: 1960-04-26
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Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Davison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:21
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0238; F25J3/0204; F25J3/0219; F25J3/0233; F25J3/0252; F25J2200/00; F25J2200/50; F25J2200/74; F25J2205/00; F25J2205/50; F25J2210/00; F25J2210/12; F25J2215/00; F25J2215/62; F25J2240/00; F25J2240/40; F25J2270/00; F25J2270/08; F25J2270/90; Y; Y10; Y10S; Y10S62/00; Y10S62/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2134699A
Cited
US2175590A
Cited
US2258749A
Cited
US2407997A
Cited
US2468750A
Cited
US2519955A
Cited
US2557171A
Cited
US2573341A
Cited
US2534274A
Cited
US2552451A
Cited
US2610704A
Cited
US2529312A
Cited
US2581088A
Cited
US2677945A
Cited
US2600494A
Cited
US2666019A
Cited
US2583090A
Cited
US2769321A
Cited
US2713781A
Cited
US2775103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |