Basic dye ink
CA 1098642 A · Owner: Borden, Inc. · Inventors: Carumpalos, Constantine G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
R.I. C-1674, BASIC DYE INK, ABSTRACT OF THE DISCLOSURE Ink composition resistant to bleed in detergents as well as fats and oils is prepared by blending ink concentrate and ink vehicle. Ink concentrate is prepared Prom organic solvent, basic dye, acidic laking resin sodium, benzoate and surfactant; whereas vehicle is made from acrylic binder resin, water, solvent, ammonium hydroxide cross-linking agent, sulfonated sulfone binder resin defoamer and buffer. -1-
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 March 31, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 1998.
- 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.