US3827964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removal of contaminants from wastes
Assignee: Individual
•
Filing: 1973-04-23
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Granted: 1974-08-06
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Expires: 1993-04-23
Abstract
Abstract AN ELECTROLYTIC CELL IS PARTITIONED BY A MEMBRANE INTO TWO ELECTROLYTIC CHAMBERS WHICH ARE FILLED WITH ELECTRIC CONDUCTORS IN A GRANULAR OR FIBROUS FORM WITH POSITIVE AND NEGATIVE MAJOR ELECTRODES RESPECTIVELY THEREBY TO FORM AN ANODE CHAMBER AND A CATHODE CHAMBER IN ABUTTING RELATION THROUGH THE MEMBRANE. THE ANODE CHAMBER OR THE CATHODE CHAMBER FILLED WITH THE GRANULAR OR FIBROUS CONDUCTORS WITH MAJOR ELECTRODES MAY BE REPLACED BY A POROUS CONDUCTIVE METAL SLEEVE.
Inventors
- 👤 K Okubo
- 👤 A Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:37
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01J; B01J47/00; B01J47/12; C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/46109; C02F1/46114; C02F1/467; C02F2101/00; C02F2101/10; C02F2101/16; C02F2101/18; C02F2201/00; C02F2201/002; C02F2201/003
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |