US2448848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophoretic separating apparatus
Assignee: Permanente Metals Corp
•
Filing: 1944-07-18
•
Granted: 1948-09-07
•
Expires: 1964-07-18
Abstract
No abstract record available.
Inventors
- 👤 William F Van Loenen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:51
CPC Classifications
C; C25; C25B; C25B7/00; B; B01; B01D; B01D57/00; B01D57/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US565121A
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US916139A
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US1145996A
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US1243808A
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US2109125A
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US2199228A
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US2302386A
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US2376535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |