High frequency filter having common coupling rods fixedly mounted and coupled through a common wall
CA 2086293 C · Owner: Bentivenga, Salvatore · Inventors: Bentivenga, Salvatore; Blair, William D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high frequency filter assembly having a plurality of input/output ports, comprises: a housing assembly having a common wall with an aperture; a plurality of resonator rods fixedly mounted within the housing assembly; one of the plurality of input/output ports being a common port mounted to the housing assembly; and a plurality of common coupling rods fixedly mounted within the housing assembly. Means are provided for directly coupling the common port to the plurality of common coupling rods through the aperture of the common wall, by directly connecting a first one of the plurality of coupling rods to the common port, and electrically connecting each remaining one of the plurality of …
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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 24, 1992 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2014.
- 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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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.