Organic compounds
CA 1207321 A · Owner: Sandoz Ltd. · Inventors: Zirngibl, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A mixture comprising at least two dyestuffs of the formula I, (I), where R is an unsubstituted linear C3-7 alkyl group with the proviso that at least two different compounds of formula I are each present to the extent of at least 10 % mol based on the total molar quantity of dyestuffs present useful for dyeing or printing synthetic or semi-synthetic high molecular weight, hydrophobic organic substrates particularly for rapid dyeing.
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
- Granted July 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 2003.
- 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.