Foldable foam mattress
CA 2120435 A1 · Owner: Folkard, Noel J. · Inventors: Ward, George A.; Folkard, Noel J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foldable mattress formed entirely of foam material has a generally planar surface to be supported on the carriage of an adjustable bed and an upper support surface on which an individual lies. The mattress includes a central foam body portion partitioned into a head supporting zone a foot supporting zone and a mid-section supporting zone. The central foam body portion is supported by a frame formed of more rigid foam than the central body portion. The foam frame includes a base and at least a pair of sidewalls running the length of the central body portion. In one embodiment a pair of laterally spaced, transverse inserts formed of high resilience foam are provided in the foam frame to …
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 March 31, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 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.