Preparations containing wax
CA 2278333 A1 · Owner: Karl, Wolf-Rudiger · Inventors: Karl, Wolf-Rudiger; Schulte, Klaus; Hocken, Jorg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to preparations containing wax used for treating wood , and leather surfaces which are characterized in that they contain very fine transparent titanium dioxide particles with a crystallite size of between 5 and 50 nm. Such preparations offer long-term protection of wood and leather surfaces against the harmful effects of light at wavelengths between 280 and 800 nm.
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 January 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2020.
- 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.