Woven fabric made of shape memory polymer
CA 2000203 C · Owner: Kobayashi, Kazuyuki · Inventors: Hayashi, Shunichi; Kobayashi, Kazuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A woven fabric woven from fibers of a shape memory polymer alone or a blend of said fibers and ordinary natural or synthetic fibers. The woven fabric can be produced from long fibers without cutting them into short fibers and so at a lower cost than non-woven fabric made of the shape memory polymer that requires cutting of long fibers. The woven fabric can be used for example as such a clothes portion that is desired to keep its shape without making wrinkles or deforms.
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 October 5, 1989 and granted March 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 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.