Pillows
CA 2005409 A1 · Owner: The National Research Development Corporation · Inventors: Wattie, Joanna Mackenzie; Wattie, James Alistair
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pillow is of rectangular form having front and rear rolls (17, 18) at its longer sides and side rolls at its shorter sides, upper and lower surfaces (15 16) of, the pillow having respective large central recessed, areas (19, 20) between the front and rear rolls the, rolls being interrupted by minor recesses (21 22, 21a, 22a, 30, 31) extending from respective sides of the pillow into the central recessed areas of the upper and lower surfaces respectively, the front and rear rolls forming on each surface a central main buttress and together with the side rolls forming four corner buttresses, side buttresses also being formed between pairs of adjacent corner buttresses respectively the, side …
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 13, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 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.