Patent US3282808A successfully refreshed from Google Patents.
US3282808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel impregnated porous cathode and method of making same
Assignee: Individual
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Filing: 1962-06-11
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Granted: 1966-11-01
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Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Kandler Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:35
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/34; C25B1/46; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/075
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
130 words
PROCESS FOR THE MANUFACTURE OF A CATHODE FOR THE ELECTROLYSIS OF ALKALI METAL CHLORIDES IN A DIAPHRAGM CELL WHICH COMPRISES DEPOSITING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF NICKEL AND IRON OXIDES AND HYDROXIDES IN THE PORES OF A METALLIC ELECTRICALLY CONDUCTIING POROUS FRAME BY ELECTROLYSIS BETWEEN SAID FRAME AS CATHODE AND AN ANODE IN AN ACID ELECTOLYTE CONTAINING THE IONS OF THE METAL OF THE COMPOUND TO BE DEPOSITED WHILE MAINTAINING THE ELECTRLYTE OUTSIDE THE CATHODE AT A PH VALUE WHICH WILL PREVENT THE PRECIPITATION OF SAID COMPOUND, SAID ELECTROLYTE CONTAINING ALSO REDUCIBLE IONS THE REDUCTIION POTENTIAL OF WHICH IS MORE POSITIVE THAN THE SEPARATION POTENTIAL OF SAID METALLIC IONS, REMOVING SAID FRAME AND DEPOSITED COMPOUND FROM SAID ELECTROLYTE AND REDUCING THE DEPOSITED COMPOUND TO THE METALLIC STATE.
Claim 2
Dependent Claim
130 words
PROCESS FOR THE MANUFACTURE OF A CATHODE FOR THE ELECTROLYSIS OF ALKALI METAL CHLORIDES IN A DIAPHRAGM CELL WHICH COMPRISES DEPOSITING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF NICKEL AND IRON OXIDES AND HYDROXIDES IN THE PORES OF A METALLIC ELECTRICALLY CONDUCTIING POROUS FRAME BY ELECTROLYSIS BETWEEN SAID FRAME AS CATHODE AND AN ANODE IN AN ACID ELECTOLYTE CONTAINING THE IONS OF THE METAL OF THE COMPOUND TO BE DEPOSITED WHILE MAINTAINING THE ELECTRLYTE OUTSIDE THE CATHODE AT A PH VALUE WHICH WILL PREVENT THE PRECIPITATION OF SAID COMPOUND, SAID ELECTROLYTE CONTAINING ALSO REDUCIBLE IONS THE REDUCTIION POTENTIAL OF WHICH IS MORE POSITIVE THAN THE SEPARATION POTENTIAL OF SAID METALLIC IONS, REMOVING SAID FRAME AND DEPOSITED COMPOUND FROM SAID ELECTROLYTE AND REDUCING THE DEPOSITED COMPOUND TO THE METALLIC STATE.
Claim 3
Dependent Claim
48 words
A CATHODE FOR A DIAPHRAGM CELL FOR THE ELECTROLYSIS OF ALKALI METAL CHLORIDES CONSISTING ESSENTIALLY OF A METALLIC ELECTRICALLY CONDUCTING POROUS FRAME THE PORES OF WHICH CONTAIN A FINELY DIVIDED METAL SELECTED FROM THE GROUP CONSISTING OF IORN AND NICKEL MADE BY THE PROCESS DEFINED IN CLAIM 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |