Expired Canadian patentCanada
Solubilization of ultraviolet absorbers
CA 1302894 C · Owner: Basf Corporation · Inventors: Burke, John Jerome; Roelofs, Robert Ross
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, The instant invention relates to liquid compositions useful in cosmetic applications comprising a UV absorber, a nonionic polyoxyalkylene block copolymer and, water.
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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
- Granted June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 28, 1987
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1302894 C
Classification (IPC)A61K8/86 +2 more
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.