Patent US3684441A successfully refreshed from Google Patents.
US3684441A
Expired / Lapsed
US
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Process for making nickel (ii) hydroxide,especially for use in electrodes
Assignee: RWE AG
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Filing: 1970-06-22
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Granted: 1972-08-15
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Expires: 1990-06-22
Abstract
Abstract OF SUCH A REACTION IS THE DESIRED NICKELOUS OR FERROUS HYDROXIDE IN THE FORM OF A PRECIPITATE WHICH MAY BE FILTERED, WASHED AND POWDERED FOR FURTHER USE, E.G. IN THE PRODUCTIONS OF ELECTRODES FOR ELECTRIC STORAGE BATTERIES. A METHOD FOR PRODUCING THE DIVALENT HYDROXIDE OF NICKEL OR OF IRON BY REACTING A SALT OF THESE METALS IN WATER SOLUTION WITH A MEMBER OF THE ALKALI AND ALKALINE-EARTH METAL GROUPS ADDED IN THE METALLIC STATE OR IN THE FORM OF A SLIGHTLY SOLUBLE (IN WATER) INTERMETALLIC COMPOUND, ESPICALLY AN AMALGAM OF MERCURY. ONE OF THE PRODUCTS
Inventors
- 👤 Peter Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:51
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/52; C; C01; C01G; C01G49/00; C01G49/02; C01G49/04; C01G53/00; C01G53/05; C01P; C01P2006/00; C01P2006/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |