Dyeing or printing of manufactured natural polymer and synthetic hydrophobic fibre materials
CA 2430606 C · Owner: Hildebrand, Rainer · Inventors: Hildebrand, Rainer; Sutter, Peter
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 process for dyeing or printing manufactured natural polymer or synthetic hydrophobic fibre materials characterized in , that it comprises using dyes of the formula (I) where R~1 is hydrogen, hydroxyl or a radical -NHCO-R~6 where R~6 is C~1-C~6alkyl or unsubstituted or C~1-C~4alkyl- or halogen-substituted phenyl R~2 is hydrogen, hydroxyl or a , radical W-R~7 where W is -NHCO- or -S- and R~7 is C~1C~6alkyl or unsubstituted or C~1-C~4alkyl- or halogen-substituted phenyl R~3 is hydrogen, R~4 is hydrogen or hydroxyl R~5 is hydrogen, halogen, methoxy, phenoxy or phenylthio, or R~3 and R~4 combine to form the radical of the formula (II) where the rings A 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 December 13, 2001 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 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.