Vibration gyro
CA 2201238 C · Owner: Inoue, Jiro · Inventors: Kumada, Akira; Kawai, Yoshio; Inoue, Jiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vibration gyro which is equipped with an oscillator in which slits are made in a flat-plate piezoelectric board to form a tuning fork section. For construction of the oscillator driving electrodes for vibrating the tuning fork section are formed in the vicinity of end portions of the slit while detection electrodes for detecting an rotational angular velocity in a longitudinal direction of the tuning fork section are formed on the arm portions of the tuning fork section.
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 27, 1997 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 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.