Patent US3067276A successfully refreshed from Google Patents.
US3067276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of regenerating double skeleton catalyst electrodes
Assignee: Accumulatoren Fabrik AG
•
Filing: 1958-06-04
•
Granted: 1962-12-04
•
Expires: 1978-06-04
Abstract
No abstract record available.
Inventors
- 👤 Gruneberg Gerhard
- 👤 Jung Margarete
- 👤 Spengler Herbert
- 👤 Justi Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:02
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/98; B; B01; B01J; B01J23/00; B01J23/90; B01J23/94; B01J23/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS OF REGENERATING EXHAUSTED DOUBLE SKELETON CATALYST ELECTRODES WHICH COMPRISES A FIRST STEP OF SUBJECTING THE ELECTRODE TO REACTION WITH A CONCENTRATED ALKALINE SOLUTION HAVING A CONCENTRATION OF BETWEEN 1 N AND 10 N AT SUBSTANTIALLY ITS BOILING TEMPERATURE; A SECOND STEP OF SUBJECTING THE ELECTRODE TO REACTION WITH AN ALKALINE SOLUTION HAVING A LOWER CONCENTRATION THAN SAID FIRST MENTIONED ALKAKLINE SOLUTION, AT A TEMPERATURE BETWEEN 50*C. AND THE BOILING TEMPERATURE OF SAID ALKALINE SOLUTION, SAID SOLUTION HAVING A PH OF BETWEEN 8 AND 14 AND CONTAINING A COMPOUND CAPABLE OF DISSOLVING HYDROXIDE, OXIDE AND SALT IMPURITIES OF THE ELECTRODE METAL, SAID COMPOUND BEING A MEMBER SELECTED FROM THE GROUP CON-
Claim 2
Dependent Claim
112 words
A PROCESS OF REGENERATING EXHAUSTED DOUBLE SKELETON CATALYST ELECTRODES WHICH COMPRISES A FIRST STEP OF SUBJECTING THE ELECTRODE TO REACTION WITH A CONCENTRATED ALKALINE SOLUTION HAVING A CONCENTRATION OF BETWEEN 1 N AND 10 N AT SUBSTANTIALLY ITS BOILING TEMPERATURE; A SECOND STEP OF SUBJECTING THE ELECTRODE TO REACTION WITH AN ALKALINE SOLUTION HAVING A LOWER CONCENTRATION THAN SAID FIRST MENTIONED ALKAKLINE SOLUTION, AT A TEMPERATURE BETWEEN 50*C. AND THE BOILING TEMPERATURE OF SAID ALKALINE SOLUTION, SAID SOLUTION HAVING A PH OF BETWEEN 8 AND 14 AND CONTAINING A COMPOUND CAPABLE OF DISSOLVING HYDROXIDE, OXIDE AND SALT IMPURITIES OF THE ELECTRODE METAL, SAID COMPOUND BEING A MEMBER SELECTED FROM THE GROUP CON-
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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |