Head support
CA 2006053 A1 · Owner: Wray, Thomas E. · Inventors: Wray, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A headrest for supporting a person's head comprises a semi-rigid formed pillow element having two similar, spaced apart side sections and a central section connecting these side sections. The front of each side section is convexly curved in a horizontal direction and the side sections have a height substantially greater than the height of the central section which extends between the lower halves of the side sections. The headrest is manufactured by joining two layers of cloth material to opposite sides of a sheet of dual density polyethylene by flame lamination. The combined material is thermally molded into the headrest.
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 December 19, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2011.
- 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.