Laundry detergent compositions comprising fabric enhancement polyamines
CA 2359451 A1 · Owner: Severns, John Cort · Inventors: Littig, Janet Sue; Severns, John Cort; Ehle, Michael
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 laundry detergent compositions which can optionally comprise bleach, said compositions comprising from about 0.01 % to about 10 % by weight, of a polyalkyleneimine having formula (I) wherein R is , C2-C4 linear alkylene, C3-C4 branched alkylene and mixtures thereof; B is a , continuation of said polyalkyleneimine by branching; w is equal to y+1; x is an integer of from about 50 to about 2500; y is an integer of from about 20 to about 1000.
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 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 16, 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.