A process for making a free-flowing particulate dye transfer inhibiting detergent admix
CA 2275147 A1 · Owner: Welch, Robert Gary · Inventors: Angell, Adrian John Waynforth; Cutter, Gary Ray; Welch, Robert Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for making a free-flowing, particulate dye transfer inhibiting detergent admix is disclosed. The process for making the dye transfer inhibiting detergent admix comprises the steps of charging a detergent builder to a mixer/granulator, adding a dye transfer inhibitor solution to the detergent builder to thereby form a mixture and agglomerating the mixture so , as to form detergent admix particles. The dye transfer inhibiting detergent admix particles can be incorporated in granular laundry detergent products.
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 December 5, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2019.
- 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.