Free fall sensor
CA 2330512 C · Owner: Ubukata Industries Co. Ltd. · Inventors: Takeda, Teruyuki; Urano, Mitsuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A free fall sensor for detecting a falling state of portable electronic equipment such as notebook personal computers includes a movable electrode including a plurality of moving portions disposed on a circumference at regular intervals so as to be equidistant from a central axis, a fixed electrode disposed outside the movable electrode so as to be brought into contact with and separated from the movable electrode an inertial member, located inside the moving portions of the movable electrode and, a buffer preventing the inertial member from contacting the fixed electrode so that the moving portions serving as movable electrodes are held between the fixed electrode and the inertial member …
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 January 9, 2001 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 9, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2023.
- 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.