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Expired Canadian patentCanada

Lead accumulator with a thixotropic gel as electrolyte and method for its production

CA 1282826 C · Owner: Jache, Otto · Inventors: Jache, Otto

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to a lead accumulator with a thioxotropic gel consisting primarily of sulphuric acid and a gel former as an electrolyte whereby the electrolyte consists of two different phases a liquid, gel, former-free phase, by which essentially the pores of the active materials are filled in, a solid phase, as a thixotropic gel by which the electrolyte, space especially between the electrodes is filled up. Both phases merge in, the zone of the pores of the separators which are arranged about the, electrodes. Arranged in relation to the electrodes as separators are fibrous, non-woven materials, woven textile fabricsor other flexible porous, surface structures with capillary-active …

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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 April 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 13, 1986
GrantedApril 9, 1991
Term endedApril 9, 2008
Patent numberCA 1282826 C
Classification (IPC)H01M10/10 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJune 13, 1986Patent grantedApril 9, 1991Term endedApril 9, 2008

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.