Electrodes for lead accumulators
CA 1255751 A · Owner: Mitsui Mining & Smelting Co. Ltd. · Inventors: Sumida, Morimasa; Miyazaki, Kazuhide
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electrodes for lead accumulators characterized, by being prepared by admixing powdered lead for use as an active material in lead accumulators with at least one member selected from lead sulfate salts to obtain a mixture and then having the thus obtained mixture held uniformly on grids without need of previous kneading aging and drying, of the mixture, thereby to obtain electrodes.
Read the whole patent
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 June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.