A method for treatment of wool
CA 2362068 A1 · Owner: Xianghong, Caroline Shi · Inventors: Mcdevitt, Jason Patrick; Xianghong, Caroline Shi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method of treating wool wool fibers or , animal hair an alkali-containing alcohol solution followed by a proteolytic , enzyme in aqueous solution. The described method results in improved shrinkresistance, and may result in improvements in handle appearance, wettability, reduction of felting tendency increased whiteness, reduction of pilling improved softness, improved tensile strength and improved dyeing , characteristics such as dye uptake and dye washfastness.
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 23, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 23, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 2022.
- 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.