Use of modified polyesters for the washing of cotton-containing fabrics
CA 2117997 A1 · Owner: Hall, Robin G. · Inventors: Williams, Timothy; Hall, Robin G.; Houpert, Olivier
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the use of selected modified polyesters known for their soil-release properties as cleaning agents for cotton-containing fabrics, thus being able to provide a cleaning effect on such fabrics after only one laundering cycle as , compared to several cycles when functioning in the soil-release agent mode. The present invention also encompasses detergent compositions containing said modified polyesters and a cellulase enzyme, or a co-dispersing agent and/or a soil-antiredeposition agent.
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 7, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2015.
- 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.