Patent US4316787A successfully refreshed from Google Patents.
US4316787A
Expired / Lapsed
US
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High voltage electrolytic cell
Assignee: Individual
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Filing: 1980-06-13
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Granted: 1982-02-23
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Expires: 2000-06-13
Abstract
Abstract A novel electrode, an apparatus and a method are set out for electrolyzing a chloride ion containing aqueous solution to produce chlorine and ozone. Through utilization of a solid state rectifier network, and without the use of a transformer, full line voltage, after rectification, is applied between the anode and cathode of an electrolytic cell utilizing an anode which is a laminated body of a platinum group metal foil bonded to a tantalum or niobium layer which in turn is bonded to a titanium substrate. Chlorine and ozone production is quite rapid.
Inventors
- 👤 Constantinos D. Themy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:21
CPC Classifications
C; C25; C25B; C25B15/00; C25B15/02; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/46109; C02F1/467; C02F1/4672; C02F1/4674; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/075; C25B11/081; C02F1/72; C02F1/76; C02F1/78; C02F2001/46133; C02F2001/46138; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4616; C02F2201/46165; C02F2201/4617
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
An apparatus for electrolyzing a chloride ion containing, and other halide ion substantially free, aqueous solution to produce chlorine, comprising: a vessel; a cathode in said vessel; an anode in said vessel, said anode including means for rendering said anode operable at a voltage above about 20 volts and at a watt density above about 100 watts per square inch of surface for over about 2 days without significant deterioration; a rectifier circuit having a pair of AC inputs, a negative output, and a positive output; a pair of cell conductors, a first of which connects said negative output to said anode and a second of which connects said positive output to said cathode; an AC power source supplying a voltage of above about 20 volts; and a pair of AC conductors directly connecting said AC inputs to receive substantially the full AC voltage from said power source.
Claim 2
Independent Claim
148 words
An apparatus for electrolyzing a chloride ion containing, and other halide ion substantially free, aqueous solution to produce chlorine, comprising: a vessel; a cathode in said vessel; an anode in said vessel, said anode including means for rendering said anode operable at a voltage above about 20 volts and at a watt density above about 100 watts per square inch of surface for over about 2 days without significant deterioration; a rectifier circuit having a pair of AC inputs, a negative output, and a positive output; a pair of cell conductors, a first of which connects said negative output to said anode and a second of which connects said positive output to said cathode; an AC power source supplying a voltage of above about 20 volts; and a pair of AC conductors directly connecting said AC inputs to receive substantially the full AC voltage from said power source.
Claim 3
Dependent Claim
41 words
An apparatus as in claim 1, wherein said means renders said anode operable at a voltage above about 100 volts for over about 2 days without significant deterioration and wherein said power source supplies a voltage of above about 100 volts.
References Cited (Backward Citations)
US3759813A
Cited
US4212725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-22 | 1985-08-24 | 1986-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-22 | 1989-08-24 | 1990-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-22 | 1993-08-24 | 1994-02-23 | $7700.00 | Window Closed / Lapsed |