Patent Yard Sign in
Expired Canadian patentCanada

Electrical power distribution system

CA 2016990 C · Owner: Bydder, Evan L. · Inventors: Bydder, Evan L.; Witehira, Pita

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

The present invention relates to power distribution systems and more particularly, to such systems using power storage devices such as batteries and involving a first electrical load best served by a power source having a low current rate and slow discharge period and a second, electrical load best served by a power source having a high current rate and rapid discharge period. One particular application involving these requirements is in automobile electrical systems. The present invention provides an electrical control circuit that functions in conjunction with such power sources to satisfy such electrical system operating requirements. The system of the present invention maintains the …

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

  • Filed May 17, 1990 and granted December 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 17, 1990
GrantedDecember 17, 1996
Term endedMay 17, 2010
Patent numberCA 2016990 C
Classification (IPC)H02J7/34 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMay 17, 1990Patent grantedDec 17, 1996Term endedMay 17, 2010

Sources & verification

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