Pigment-containing base composition
CA 1207274 A · Owner: Gakko Hojin Kinki Daigaku (Educational Foundation Kinki University) · Inventors: Ikeda, Shoji; Ihara, Tatuhiko; Ito, Seisiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The invention provides a pigment-containing composition comprising at least one organic pigment irradiated with a low-temperature plasma and at least one polar resin or solvent. The irradiation of the pigment imparts polarity to the particle surfaces and greatly improves the dispersibility of the particles in the polar resin or solvent. However the desirable properties of the pigment particles are not adversely affected by the plasma treatment.
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.