Silver-coloured lustre pigment
CA 2364327 A1 · Owner: Schmidt, Christoph · Inventors: Fornoff, Claudia; Bruckner, Hans-Dieter; Schmidt, Christoph
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 silver-coloured lustre pigments based on multiply coated platelet-shaped substrates comprising at least one layer, sequence of (A) a high refractive coating consisting of TiO2 and having a thickness of 5-200 nm, (B) a colourless coating having a refractive index n<=1.8 and a thickness, of 10-300 nm, (C) a high refractive coating consisting of TiO2 and having a thickness of 5-200 nm, and optionally, (D) an outer protective layer. and to the use thereof in paints coatings, printing inks, including security printing inks, plastics, ceramic materials glasses and cosmetic, formulations and for producing pigment preparations and dry product forms.
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 December 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2023.
- 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.