Sleep detecting apparatus
CA 2056370 C · Owner: Ogino, Hiroyuki · Inventors: Ogino, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Weight of a person in bed is detected by a piezo-electric element 13 without contacting to the body and time measurement is reset and started newly by a timer, every time when a detected output exceeds a predetermined set value. When the measurement time of the timer exceeds a set time predetermined it is judged that, the body has fallen asleep on the bedding. Meanwhile absence or presence in bed and rough body movement are judged by detecting the fine body movement propagated by the functioning of heart and breathing of the body and in, case the presence in bed is judged the time measurement operation is started by the timer, and by judging the absence and rough body movement the time …
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 7, 1991 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2013.
- 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.