Sickbed
CA 2178678 C · Owner: Chuang, Ching-Shan · Inventors: Chuang, Ching-Shan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sickbed, comprising: a first bed frame provided with, a plurality of fixed bed planks of mutual distance to support the patient's body and allow him to sit up or lift the legs, thus changing his posture; a second bed frame, vertically movably mounted below the first bed frame; a plurality of movable bed planks which are, mounted on said second bed frame at a suitable height, above said second bed frame keeping certain distances, from each other and being placed in gaps between said fixed bed planks; a first driving device to drive the second bed frame's movement up and down; and a second driving device to drive the first bed frame. Its improved parts include two lateral turning frames to …
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 June 10, 1996 and granted January 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2018.
- 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.