Detergent composition
CA 2255854 C · Owner: Bird, Nigel Peter · Inventors: Maddison, Christopher; Whaley, Christopher; Finch, Timothy David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A detergent composition comprising a liquid photofading inhibitor having a log P value of at least 1.9 or a solid photofading inhibitor dissolved in a liquid, the liquid having a log P of at least 1.9 or mixtures thereof. The composition has a nonionic surfactant/cationic material based deposition system to deposit the photofading inhibitor.
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 April 17, 1997 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 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.