US3440159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of un-ionized substances by electro-osmosis
Assignee: Veolia WTS Systems USA Inc
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Filing: 1965-08-26
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Granted: 1969-04-22
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Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Wayne A Mcrae
- 👤 William E Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:40
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/463; A; A23; A23C; A23C9/00; A23C9/14; A23C9/144; B01D61/427; C; C13; C13B; C13B20/00; C13B20/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2758965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |