Fabric treatment to improve dyeability thereof
CA 1298041 C · Owner: Jerome, John L. · Inventors: Cope, Jerry L.; Tambor, Martin; Jerome, John L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cationic cellulose graft copolymers obtained by the graft polymerization of a cellulose substrate and a cationic monomer are useful as textile treatment agents, especially as dye enchancers. As pretreatment agents, they improve dye yield dye levelness and dye fastness, properties and as after-treatment agents they improve dye fastness and, crock resistance properties.
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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- 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.