US3457152A
Expired / Lapsed
US
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Electrolytic apparatus and process for removing trace metals
Assignee: Monsanto Co
•
Filing: 1964-11-30
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Granted: 1969-07-22
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Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Jim N Maloney Jr
- 👤 Charles R Campbell
- 👤 Robert Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:15
CPC Classifications
C; C01; C01D; C01D17/00; C01D17/003; C01D1/00; C01D1/04; C01D1/28; C01D1/40; C01D3/00; C01D3/14; C01F; C01F11/00; C25; C25B; C25B15/00; C25B15/08; C25B15/085; C25B3/00; C25B3/20; C25B3/29; C25B3/295
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US673452A
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US883170A
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US1038122A
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US1857224A
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US2109151A
Cited
US2563903A
Cited
US3003942A
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US3141841A
Cited
US3180810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |