Nonreciprocal circuit device
CA 2214617 C · Owner: Murata Manufacturing Co. Ltd. · Inventors: Kawanami, Takashi; Makino, Toshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Two inductor electrodes formed of hairpin-shaped electrode patterns are made on one main surface of a component member of a nonreciprocal circuit device and connection electrodes are formed on the other main surface at positions corresponding to both ends of each inductor electrode. Both ends of each inductor electrode are connected to the connection electrodes by through holes. The port sections of central conductors at the signal input and output side are connected to input and output terminal electrodes through the inductor electrodes formed on the component member of the nonreciprocal circuit device.
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 September 4, 1997 and granted December 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2019.
- 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.