US3911094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing stable NiOOH
Assignee: ESB Inc
•
Filing: 1974-01-28
•
Granted: 1975-10-07
•
Expires: 1994-01-28
Abstract
Abstract Stable NiOOH is prepared by mixing an alkali metal hydroxide with nickel hydrate and ozonating the resultant mixture.
Inventors
- 👤 El Sayed Megahed
- 👤 Patrick J Spellman
- 👤 Leif Tennare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:47
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/52; C; C01; C01G; C01G53/00; C01G53/05; H01M6/00; H01M6/04; H01M6/06; H01M6/08; C01P; C01P2006/00; C01P2006/60; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A METHOD FOR PREPARING STABLE TETRAVALENT NICKEL OXYHYDROXIDE, WHICH METHOD COMPRISES MIXING AN ALKALI METAL HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE, CESIUM HYDROXIDE, LITHIUM HYDROXIDE AND RUBIDIUM HYDROXIDE WITH NICKEL HYDRATE AND DRY OZONATING THE RESULTANT MIXTURE, WHEREIN THE AMOUNT OF ALKALI METAL IN THE MIXTURE IS FROM ABOUT 5 TO ABOUT 40 BY WEIGHT PERCENT BASED ON THE WEIGHT OF THE NICKEL HYDRATE.
Claim 2
Independent Claim
69 words
A METHOD FOR PREPARING STABLE TETRAVALENT NICKEL OXYHYDROXIDE, WHICH METHOD COMPRISES MIXING AN ALKALI METAL HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE, CESIUM HYDROXIDE, LITHIUM HYDROXIDE AND RUBIDIUM HYDROXIDE WITH NICKEL HYDRATE AND DRY OZONATING THE RESULTANT MIXTURE, WHEREIN THE AMOUNT OF ALKALI METAL IN THE MIXTURE IS FROM ABOUT 5 TO ABOUT 40 BY WEIGHT PERCENT BASED ON THE WEIGHT OF THE NICKEL HYDRATE.
Claim 3
Dependent Claim
14 words
A method according to claim 1 wherein the alkali metal hydroxide is potassium hydroxide.
Claim 4
Dependent Claim
25 words
A method according to claim 2 wherein the amount of potassium hydroxide present in the mixture is from about 5 to about 40 weight percent.
Claim 5
Dependent Claim
14 words
A method according to claim 1 wherein the alkali metal hydroxide is sodium hydroxide.
Claim 6
Dependent Claim
25 words
A method according to claim 4 wherein the amount of sodium hydroxide present in the mixture is from about 5 to about 30 weight percent.
Claim 7
Dependent Claim
14 words
A method according to claim 1 wherein the alkali metal hydroxide is lithium hydroxide.
Claim 8
Dependent Claim
25 words
A method according to claim 6 wherein the amount of lithium hydroxide present in the mixture is from about 5 to about 20 weight percent.
Claim 9
Dependent Claim
16 words
A method according to claim 1 wherein the dry ozonation is carried out at room temperature.
Claim 10
Dependent Claim
15 words
A method according to claim 1 wherein the ozonation is carried out at about 15*C.
References Cited (Backward Citations)
US1083355A
Cited
US1167484A
Cited
US3347706A
Cited
US3455741A
Cited
US3436267A
Cited
US3806591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |