Glass mounted antenna
CA 1308189 C · Owner: Shimazaki, Tetsuo · Inventors: Shimazaki, Tetsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mobile transmitting and receiving communications antenna assembly for use on a vehicle, includes a primary radiating element, a secondary radiating element having first and second radiating elements, normal to a longitudinal axis of the primary radiating element to form a ground plane therefor. Impedance matching means comprising a tuned circuit tuned to the nominal resonant frequency of the capacitively loaded antenna and electrically connected to the second electrically conductive coupling member in the immediate proximity thereof to resonate in conjunction with said primary radiating element. The impedance matching means displaying an impedance which varies between a first impedance at …
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
- Granted September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 2009.
- 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.