Expired Canadian patentCanada
Method for preparing a stable tetravalent nickel oxyhydroxide having the formula ni2ox.h2o wherein x is greater than 3.0 and less than 4.0
CA 1050237 A · Owner: Esb Incorporated · Inventors: Megahed, El S.; Spellman, Patrick J.; Tennare, Leif
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
METHOD OF PREPARING STABLE NiOOH, ABSTRACT OF THE DISCLOSURE Stable NiOOH is prepared by mixing an alkali metal hydroxide with nickel hydrate and ozonating the resultant mixture.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 13, 1979
Term endedMarch 13, 1996
Patent numberCA 1050237 A
Classification (IPC)C01G53/04
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.