Liquid fabric softener
CA 1290106 C · Owner: Piper-Flatley, Heidi Anne · Inventors: Piper, Heidi Anne; Wahl, Errol H.; Piper-Flatley, Heidi Anne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Liquid fabric softening composition for use in a rinse bath after washing fabrics with a detergent. The softening composition has a pH of less than about 7 and contains light-unstable red dyes especially D&C Red #28, to provide a pink color the softening, composition being packaged in a container that protects the dye from light. Light destroys the dye on fabrics equipment, etc. to, avoid dye build-up.
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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- 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.