Mattress
CA 2076218 A1 · Owner: Teasdale, Barry Charles · Inventors: Teasdale, Barry Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
MATTRESS, A mattress, which is particularly effective in preventing and relieving decubitus ulcers comprises a, plurality of inflatable sections. Inflation means associated with the mattress inflate at least one of the inflatable sections at a first, higher pressure and simultaneously inflate at least one of the inflatable sections at a second, lower pressure. By sequentially changing the sections to which the high and low pressures are applied, different areas of a patient's body may be pressure relieved in turn allowing blood to flow in the parts of the patient in contact with a low pressure section while still providing support for the patient. There may be a number of groups of …
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 August 14, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2014.
- 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.