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Expired Canadian patentCanada

Sensing device for measuring a load on a vehicle in two directions simultaneously

CA 2258047 C · Owner: Honma, Toshio · Inventors: Honma, Toshio; Takahashi, Naoya

CIPO record

Overview

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

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Abstract From the Canadian patent

A sensing element which can separately and simultaneously detect the variations of the loads on a vehicle in two directions. In the sensor section (2b) of the sensing element which connects fixed sections (2c and 2d) on both sides of and in the length direction X of a platy member (2) coated with an insulating film, a width-direction load sensor (3) and a thickness-direction load sensor (4) are arranged at an internal in the length direction X of the member (2) and the sensor (3) is constituted of a resistance section (3a) in which four resistors (3b-3e) intersecting the length direction X and width direction Y of the member (2) at 45~ are connected in a square form and four …

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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 June 4, 1997 and granted March 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2019.
  • 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 4, 1997
GrantedMarch 25, 2003
Term endedJune 4, 2017
Patent numberCA 2258047 C
Classification (IPC)G01L1/22 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJune 4, 1997Patent grantedMarch 25, 2003Term endedJune 4, 2017

Sources & verification

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