Expired Canadian patentCanada
Method of treating low antimony alloy battery grid material with phosphorus
CA 1107972 A · Owner: General Battery Corporation · Inventors: Nees, John; Pike, Kenneth
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel method is provided wherein the grain structure, and castability of low antimony lead battery grid alloy is improved by treating that alloy with trace amounts of phosphorus and more particularly red phosphorus.
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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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 2, 1978
GrantedSeptember 1, 1981
Term endedSeptember 1, 1998
Patent numberCA 1107972 A
Classification (IPC)C22C1/06 +1 more
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.