Composite fabrics
CA 2077321 A1 · Owner: Mcneil-Ppc, Inc. · Inventors: Elves, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Composite Fabrics, Absorbent composite fabrics for use as or in absorbent products such as wound dressings are disclosed. The fabrics comprise a light, water-permeable hydrophobic first layer 2 of nonwoven fibrous material having a weight of from 15 to 40g/m2 and bonded by hydraulic entanglement to a waterabsorbent nonwoven fibrous second layer 3. The fabrics are applied to wounds or burns with the hydrophobic first layer in contact with the wound. Fluids from the wound pass through the water-permeable hydrophobic first layer 2 and are absorbed in the fibrous second layer 3. The surface of the first layer 2 remains dry and non-adherent to the wound. A method of manufacture of the absorbent …
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 September 1, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 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.