Tunable microwave devices
CA 2224587 C · Owner: Vendik, Orest · Inventors: Wikborg, Erland; Vendik, Orest; Kollberg, Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to tunable microwave devices (10A) comprising a substrate (101) of a dielectric material which has a variable dielectric constant. At least one superconducting film (102) is arranged on at least parts of the dielectric substrate (101). The dielectric substrate (101) comprises a non-linear dielectric bulk material.
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 June 13, 1996 and granted May 15, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2018.
- 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.