Patent US3616442A successfully refreshed from Google Patents.
US3616442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical cell having gas diffusion electrode
Assignee: Kimberly Clark Corp
•
Filing: 1969-12-11
•
Granted: 1971-10-26
•
Expires: 1989-12-11
Abstract
Abstract An electrochemical device particularly including an electrolytic cell adapted for peroxide production. The device has a unitized insert electrode structure for mounting in an outer electrolyte retaining casing. The unitized insert electrode structure is adapted to provide a dual cell arrangement including planar cathodes each of which has a separate cooperating anode and semipermeable diaphragm. The flow path of electrolyte in each cell is into an anode chamber, through the semipermeable diaphragm to the cathode chamber over the cathode surface and out of the cell.
Inventors
- 👤 Wayne S Cheng
- 👤 Peter R Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:26
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/28; C25B1/30; C25B9/00; C25B9/17; C25B9/19
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
An electrochemical device according to claim 1 in which the casing has a lower inlet opening for the passage of liquid electrolyte to said anode, said permeable diaphragm and across a face of said gas diffusion cathode, and said unitized insert electrode structure has an air inlet to said air chamber for continuous flow of air to said gas diffusion cathode, said casing being open upwardly for movement of liquid and gas outwardly of said device.
Claim 2
Dependent Claim
76 words
An electrochemical device according to claim 2 in which the unitized insert electrode structure has a pair of planar cathodes and the framework has a pair of frames, one supporting each cathodE on opposite sides of the said air chamber, each said frame also supporting on an outer side thereof an anode for cooperation with an adjacent cathode, and a semipermeable diaphragm between each cathode-anode arrangement and supported on the outer side of a said frame.
Claim 3
Dependent Claim
35 words
An electrochemical device according to claim 1 in which the framework of the unitized insert electrode structure includes a frame having an internal seat and the cathode is planar and received fixedly on said seat.
Claim 4
Dependent Claim
60 words
An electrochemical device according to claim 1 in which the device includes a pair of electrolytic cells each having a planar cathode, an anode and a semipermeable membrane, and the framework includes a pair of similar frames, each of said frames retaining the components of a cell and the frames being united to define the air chamber between the cells.
Claim 5
Dependent Claim
18 words
An electrochemical device according to claim 5 in which the air chamber has a pair of air inlets.
Claim 6
Dependent Claim
40 words
An electrochemical device according to claim 1 in which the casing has vertically extending ribs defining vertically extending channels for electrolyte flow and unitized insert electrode structure abuts said ribs, and said ribs have cutouts communicating adjacent vertically extending channels.
Claim 7
Dependent Claim
36 words
An electrochemical device according to claim 1 in which the casing has a lower inlet opening for electrolyte passage and the framework is cut out adjacent said passage to accommodate said electrolyte flow around the framework.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |