Foldable foam mattress
CA 2101048 A1 · Owner: Woodbridge Foam Corporation · Inventors: Folkard, Noel J.; Ward, George A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foldable mattress includes a foam body having a generally planar surface to be supported on the carriage of an adjustable bed and an uppersupport surface on which an individual lies. The foam body is partitioned into a head supporting zone, a foot supporting zone and a mid-section supporting zone. The head and foot supporting zones are formed of the same one type of foam material while the mid-section supporting zone is formed of at least another type of foam material of higher resiliency than the one type of foam material. At least one transverse insert formed of foam material generally more resilient than the one type of foam material extends across the width of the body to facilitate …
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 July 21, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2015.
- 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.