Patent US2390528A successfully refreshed from Google Patents.
US2390528A
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US
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Extraction of phosphatides, free fatty acids, and the like from glyceride oils
Assignee: PPG Industries Inc
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Filing: 1940-05-13
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Granted: 1945-12-11
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Expires: 1960-05-13
Abstract
No abstract record available.
Inventors
- 👤 Stephen E Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:19
CPC Classifications
C; C11; C11B; C11B3/00; C11B3/006; A; A23; A23J; A23J7/00; C11C; C11C1/00; C11C1/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-12-10 | 1949-06-11 | 1949-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-10 | 1953-06-11 | 1953-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-10 | 1957-06-11 | 1957-12-11 | $7700.00 | Window Closed / Lapsed |