Metal complex dye mixtures
CA 2602011 C · Owner: Steinau, Oliver · Inventors: Ruchser, Thomas; Giehl, Andreas; Steinau, Oliver
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dye mixtures comprising one or more, such as two or three preferably 1 or 2, dyes of the formula (1) and at least 2 dyes of the formula (2) (see formula 1)(see formula 2), in which Me M, n, and V1 to V11 are as defined in claim 1 their preparation, and , their use for dyeing and printing hydroxyl- and carboxamido-containing material.
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 March 15, 2006 and granted September 3, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 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.