Filament with copolymer component of styrene and higher alcohol ester
CA 1075868 A · Owner: Toray Industries, Inc. · Inventors: Kitagawa, Hideaki; Aya, Toshihiko; Izumi, Zenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sheet-like materials for example for use as synthetic fabrics comprising a bundle of fine fibers having a maximum deformation ratio of about 12% and a minimum apparent density of 0.21 g/cm3 said fine fibers, having a maximum denier of about 0.45 are disclosed. The materials are made by forming a fiber aggregate of multi-component fibers removing one, component from the fibers eg. by dissolution, to convert each fiber to a bundle of fine fibers consisting of the residual component shrinking, and heat treating the aggregate and impregnating the aggregate with a binder.
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
- Granted April 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 1997.
- 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.