Yig thin film microwave apparatus
CA 1266100 C · Owner: Ito, Seigo · Inventors: Yamada, Toshiro; Ito, Seigo; Tamada, Hitoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a YIG thin film device utilizing ferrimagnetic resonance effect, a magnetic circuit having a gap of length ?g where the YIG thin film device being provided and applying a bias magnetic field perpendicular to a film surface of the YIG thin film device, the magnetic circuit including a permanent magnet having a thickness ?m and a soft magnetic plate having a thickness ?x,the permanent magnet satisfying the characteristics, 4.pi.Mso < (fo/.gamma.) NzY4 .pi. MsoY the soft magnetic plate satisfying the characteristics 4.pi.Mso < (fo/.gamma.) NzY4.pi.MsoY, wherein fo is resonance frequency of the YIG thin film device, .gamma. is gyromagnetic ratio of the YIG thin film NzY is …
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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
- Granted February 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 2007.
- 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.