Multi-component polymeric strands including a butene polymer and nonwoven fabric and articles made therewith
CA 2116196 C · Owner: Kimberly-Clark Worldwide, Inc. · Inventors: Mcdowall, Debra J.; Strack, David C.; Shawver, Susan E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Multicomponent polymeric strands including a polymer blend of a butane polymer, a polyolefin other than butane, and up to 10% by weight of ethylene in polymeric form. The blend is in one side or the sheath of the multi-component strands. Fabric made with such strands is also disclosed and has enhanced softness properties. Composite materials including the foregoing fabric bonded to both sides of an inner meltblown layer and garments and other articles made with the fabric are also disclosed.
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 February 22, 1994 and granted April 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 2016.
- 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.