Patent US2435732A successfully refreshed from Google Patents.
US2435732A
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Refining hydrocarbon liquids
Assignee: Pure Oil Co
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Filing: 1944-12-18
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Granted: 1948-02-10
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Expires: 1964-12-18
Abstract
No abstract record available.
Inventors
- 👤 George W Ayers
- 👤 Lyon Priscilla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:41
CPC Classifications
C; C10; C10G; C10G19/00; C10G19/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE570876C
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US1951206A
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US2028998A
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US2150149A
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US2208591A
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US2228028A
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US2324948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |