Three-terminal capacitor and assembly
CA 2116995 C · Owner: Ishibashi, Youichi · Inventors: Watanabe, Chikara; Yamate, Kazunori; Ishibashi, Youichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reduced size three-terminal type capacitor for removing jamming signals from an electrical signal. The three-terminal type capacitor comprises a ceramic substrate with a first ground electrode layer formed on the ceramic substrate and a first, dielectric layer formed on the first ground electrode layer. On the first dielectric layer reaching at least from one end of the first dielectric layer to the other end is a signal electrode. A second dielectric layer is formed on the first dielectric layer to surround the signal electrode together with the first dielectric layer, and a second ground electrode layer is formed on the second dielectric layer together with the first ground electrode …
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 March 4, 1994 and granted January 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2016.
- 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.