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Expired Canadian patentCanada

Vehicular ac generator with vibration damper system

CA 2002423 C · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Okamoto, Hitoshi; Sasamoto, Takahiro

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A vibration damping system for supporting a, substantially vertically extending member having a bottom to be supported relative to a foundation, comprising a first and a plurality of second vibration damper members. The first damper member is mounted between the bottom of the member to be supported and the foundation and having a predetermined spring characteristic and a predetermined damping characteristic. The second vibration damper members are mounted between an upper portion of the member to be supported and the foundation and extending substantially horizontally to the foundation and at a predetermined angle relative to each other, the second vibration damper members having a …

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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

  • Filed November 7, 1989 and granted February 8, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 7, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 7, 1989
GrantedFebruary 8, 1994
Term endedNovember 7, 2009
Patent numberCA 2002423 C
Classification (IPC)H02K5/24 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedNov 7, 1989Patent grantedFeb 8, 1994Term endedNov 7, 2009

Sources & verification

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