Movement detector and apnea monitor including same
CA 2069059 C · Owner: Hisense Ltd. · Inventors: Shtalryd, Haim; Yotam, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A movement detector particularly useful as an apnea monitor includes a piezoelectric crystal transducer a, supporting member on one side of the transducer and a, collector member on the apposite side of the transducer and having an effective area, as circumscribed by its outer edges, which is at least fifty times the surface area of the respective side of the transducer, for collecting the forces applied at that side of the transducer and for applying them to the transducer.
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 May 20, 1992 and granted November 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2014.
- 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.