Directional antenna
CA 2339844 A1 · Owner: Tokin Corporation · Inventors: Minegishi, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A directional antenna, on a periphery or one side of which is provided an electromagnetic interference suppressor (3) composed of the magnetic compound that contains oxide-coated magnetically soft powder. This antenna is suitable for a structure in which a first antenna (10) held slidingly in the case of a mobile unit is connected with a second antenna (20) on the end of the first antenna.
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
- Filed June 29, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 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
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.