Seat cushion assembly
CA 2135664 C · Owner: Special Health Systems Ltd. · Inventors: Medjedovic, Nenad B.; Harrison, Patrick N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A seat cushion assembly has a lower layer of resilient shape-retaining material with an upper surface having a pair of adjacent parallel channelshaped, recesses extending rearwardly from a front end of the cushion assembly and shaped to conform to the undersides of the thighs of a sitting person. The upper, surface also has a rear recess in a rearward and intermediate area positioned to be, beneath the buttocks of the sitting person. An insert of relatively firm deformable material is located in the rear recess of the lower layer and an , upper, layer of soft material covers the lower layer and the insert. The upper layer has, channel-shaped recesses conforming with the channel-shaped …
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 November 11, 1994 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 11, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 11, 2016.
- 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.