Adjustable cervical pillow
CA 2075770 A1 · Owner: Imperial Feather Corporation (Toronto) Limited · Inventors: Dixon, Linda H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cervical pillow is provided having a multi-component polyurethane foam construction with an upper portion intermediate portion and foundation portion. The upper portion includes a convoluted support surface preferably having multi-density upwardly extending protrusions and is laminated to the intermediate portion. The intermediate portion is configured having two generally perpendicular channel depressions of equal depth for supporting and stabilizing the head and neck in an anatomically neutral position, the upper portion conforming to the channels and communicating the channel contour to the support surface. Local support adjustment along one channel is facilitated by a cut-out in the …
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 August 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 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.