Fabric softener compositions
CA 2184898 C · Owner: Lapierre, Luc · Inventors: Swartley, Donald Marion; Wahl, Errol Hoffman; Trinh, Toan
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 rinse-added fabric softening compositions comprising from about 5 % to about 50 % biodegradable softener active, from about 0.2 % to about 20 % silicone having a viscosity of from about 2 to about 5000 cSt and the balance being, an aqueous solvent system optionally containing low molecular weight organic solvents that are highly soluble in or miscible with water. Fabrics treated with these compositions have superior re-wet characteristics.
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 March 7, 1995 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2017.
- 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.