Non radiative dielectric waveguide having a portion for line conversion between different types of non radiative dielectric waveguides
CA 2256283 C · Owner: Taguchi, Yoshinori · Inventors: Tanizaki, Toru; Taguchi, Yoshinori; Takakuwa, Ikuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a millimeter wave module or the like mixing a normal NRD guide and a hyper NRD guide a conversion portion structure for non radiative dielectric waveguides of different types has excellent conversion characteristics at the connection between both NRD guides. In a first conversion portion the width of a dielectric strip is changed from the width of a dielectric strip in the hyper NRD guide portion to the width of a dielectric strip in the normal NRD guide portion grooves of approximately the same depth as grooves in the hyper NRD guide are provided extending as far as the second conversion portion and in a third conversion portion, the width of these grooves widens perpendicular to 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 December 17, 1998 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 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.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.