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Expired Canadian patentCanada

Control system to automatically dim vehicle head lamps

CA 2284496 C · Owner: Bechtel, Jon Harold · Inventors: Stam, Joseph Scott; Roberts, John King; Bechtel, Jon Harold

CIPO record

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Abstract From the Canadian patent

An automatic vehicle head lamp dimming system which includes an optical system and an imaging processing system. The optical system is configured to discriminate between head lamps and tail lamps and focus the light rays from the head lamps and tail lamps on different portions of a pixel sensor array. The optical system as well as the image processing system provides for relatively increased discrimination of head lamps and tail lamps of other vehicles and also enables the high beam head lamps of the control vehicle to be controlled as a function of the distance as well as horizontal angular position of other vehicles relative to the controlled vehicle.

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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 March 26, 1998 and granted January 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 1998
GrantedJanuary 29, 2002
Term endedMarch 26, 2018
Patent numberCA 2284496 C
Classification (IPC)B60Q1/14 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedMarch 26, 1998Patent grantedJan 29, 2002Term endedMarch 26, 2018

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