Coloring composition
CA 1159605 A · Owner: Holland Colours Apeldoorn B.V. · Inventors: Roest, Gooitsen; Bes, Richard F. T.; Knol, Jan D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Coloring composition in finely divided form ob-, tained by mixing a meltable organic carrier with a pigment and finely dividing the composition. The organic carrier is of a mono or tetra ester of pentaerythritol and stearic acid stearylamide, ethylene bisstearylamide or hydrogenated castor oil. For adjusting the melting range and the viscosity of the composition, metal soaps, waxes or phthalic acis esters may be added.
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 January 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2001.
- 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.