Absorbent mattress-cover
CA 2003243 A1 · Owner: Nieveld-Molenaar, Elisabeth P. · Inventors: Nieveld-Molenaar, Elisabeth P.; Nieveld-Molenaar, Elisabeth P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent mattress cover consisting of at least two layers, the first layer, facing the mattress, being substantially impermeable to liquid while the second layer, lying thereon, is in the form of a liquid absorbent layer, the layer substantially impermeable to liquid being in the form of a foil highly permeable to water vapour.
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 November 17, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 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.