Pigment/auxiliary combination having improved colour properties
CA 2553055 C · Owner: Friedrich, Holger · Inventors: Buechner, Gerald; Friedrich, Holger; Kischkewitz, Juergen
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 a pigment/auxiliary combination having an improved chroma , and/or relative colour strength to its production and to its use. The pigment/auxiliary , combination comprises: one or more inorganic chromatic pigments selected from the group , consisting of an iron oxide pigment a chromium oxide pigment, a mixed-phase rutile , pigment, and a mixture thereof; and one or more organic auxiliaries selected from the group , consisting of a modified carboxylate a partly or fully hydrolysed polyvinyl alcohol, an alkyl , sulphate, an alkylsulphonate an alkyl phosphate, an alkylphosphonate in the form of an alkali , metal salt thereof and a mixture thereof and …
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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 24, 2006 and granted May 21, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.