Improvement of strength and abrasion resistance of durable press finished cellulosic materials
CA 2480912 A1 · Owner: Shi, Caroline · Inventors: Liu, Jim; Salmon, Sonya; Xu, Hui
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for improving the abrasion resistance and tensile strength of durable press finished cellulosic materials such as , cotton. According to the method of the present invention the cellulosic material is treated with an enzyme composition capable of removing cross links from the cellulosic material, especially cross links on the material surface.
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 April 4, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2025.
- 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.