Patent Yard Sign in
Expired Canadian patentCanada

Liquid cathode electrochemical cell with improved geometry and containing a high efficiency cathode current collector

CA 1188729 A · Owner: Altus Corporation · Inventors: Driscoll, Joseph R.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

An electrochemical cell having improved efficiency and life is provided wherein substantially the total volume of the liquid cathode is contained within the pores of a solid porous, nonconsummable current collector and separator said, current collector having a first constituent consisting of an electrically conducting material which is less electropositive than the anode, and a second constituent consisting of an electrically nonconductive material said first and second, constituents being combined such that the resistivity of said current collector varies inversely with the distance from said anode.

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 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 5, 1982
GrantedJune 11, 1985
Term endedJune 11, 2002
Patent numberCA 1188729 A
Classification (IPC)H01M4/00 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedAug 5, 1982Patent grantedJune 11, 1985Term endedJune 11, 2002

Sources & verification

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