Therapeutic sleeping pillow
CA 2232020 C · Owner: Core Products International, Inc. · Inventors: Keilhauer, Ed
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a therapeutic pillow (15) with enhanced ability to support the head, neck and upper back of the user when the user is sleeping either on his or her back or side positions referred to in this disclosure as , the back sleeping and side sleeping positions respectively. In one embodiment , the invention provides a generally rectangular shaped section (16) of suitable resilient form-retaining material, having a centrally disposed cavity in its upper surface which cavity is adapted to support the head of the sleeper. The cavity merges with the forward edge of the pillow (15) and through a smooth arcuate neck supporting section into a generally wedge 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 September 12, 1996 and granted May 27, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 12, 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.