Rinse added fabric softener compositions containing sunscreens for sun-fade protection for fabrics
CA 2192802 C · Owner: Severns, John Cort · Inventors: Baker, Ellen Schmidt; Hartman, Frederick Anthony; Severns, John Cort
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 fabric care compositions to reduce the fading of fabrics from sunlight, comprising: (A) from about 1 % to about 25 % by weight of the composition, of a non-fabric staining light stable sunscreen , compound preferably containing at least one C8-C22 hydrocarbon fatty organic moiety; (B) from 3 % to about 50 % by weight of a fabric softening compound; and (C) from about 25 % to about 95 % by weight of a carrier material; wherein the sunscreen compound absorbs light at a wavelength of from about 290 nm to about 450 nm; wherein the sunscreen compound is a solid material having a melting point of from about 25 ~C to about 90 ~C or a viscous liquid at a …
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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 July 13, 1995 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 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.