Antenna assembly and a mobile radio apparatus using the same
CA 2291773 C · Owner: Tokin Corporation · Inventors: Otomo, Shinichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An antenna assembly (35) mounted to a mobile communication set by a holder (61) to be retractable therein and extendable therefrom comprises a whip antenna (51) having a contact (57) and a helical antenna (43) joined with each other through an insulator joint member (39). The holder (61) is connected to a transceiver circuit in the set. In an extended position the whip antenna , (51) is fed from the transceiver circuit through the contact (57) and the holder (61). A conductive sleeve (49) is connected to the helical antenna (43) and mounted on the joint member (39) to be in contact with the holder (61) in the retracted condition whereby the helical antenna (43) is fed by the …
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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 April 12, 1999 and granted November 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2021.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.