Liquid fabric softener
CA 1285352 C · Owner: Wahl, Errol Hoffman · Inventors: Wahl, Errol Hoffman; Vimba, Aivars Ivars
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Liquid fabric softening compositions for use in a rinse bath after washing fabrics with a detergent. The softening compositions have a pH of less than about 7 and contain certain specific light-stable dyes at levels which provide a pink color.
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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 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.