Passive element circuit
CA 2239277 C · Owner: Yamaguchi, Keiko · Inventors: Yamaguchi, Keiko; Iwata, Naotaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A passive element circuit is formed by a spiral inductor a, high-dielectric-constant thin-film capacitor a via hole, and, a bonding pad. By using SrTiO3 as the high-dielectric-constant thin-film, which exhibits a dielectric constant of 200 up to a frequency of 20 GHz, it is possible to achieve a reduction of the capacitor surface area to approximately 1/30 of the area formerly required when using a SiNX (dielectric constant up to 6.5). Two high-dielectric-constant thin-film capacitors a via, hole for grounding, and a bonding pad are disposed at the center which are surrounded by the spiral inductor. To connect the two high-dielectric-constant thin-film capacitors are joined in series, they …
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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 May 29, 1998 and granted February 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 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.
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.