Composite material for absorbing and dissipating body fluids and moisture
CA 2253759 C · Owner: H. H. Brown Shoe Technologies, Inc. · Inventors: Hermann, Paul F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Layered composite materials (10) adapted to be formed into predetermined shaped components disposed for contact with moisture and body fluids having a cover layer (11) for contact with the moisture and body fluids and a foam layer (12) including one or more sorbents in a hydrophilic polyurethane foam matrix, wherein the foam layer (12) is bonded to the cover layer (11) so that moisture and body fluids in contact with the cover layer (11) are transferred through the cover layer (11) to the foam layer (12). The foam layer (12) may include other active ingredients such as odor absorption and bactericidal components, thermal phase change components and finely ground rubber tire …
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 May 7, 1997 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2019.
- 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.