Automobile antenna system
CA 1249052 A · Owner: Toyota Jidosha Kabushiki Kaisha · Inventors: Kondo, Hiroshi; Ohe, Junzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an automobile antenna system including a high-frequency pick-up device for receiving broadcast waves and which includes a loop antenna or detection electrode element disposed parallel and in close proximity to the marginal edge of the vehicle body and spaced from the marginal edge of the vehicle body within a range represented by 12 x 10-3.lambda.(m) where .lambda. is the wavelength of a given broadcast wave measured by metric unit, to detect surface high-frequency currents on the marginal portion of the vehicle body. The high-frequency pick-up device is connected with a varactor diode to adjust the resonance frequency of the antenna system. The tuned …
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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
- Granted January 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.