Use of coated pigment granules in electrophotographic toners and developers, powder coatings and inkjet inks
CA 2360977 A1 · Owner: Baur, Ruediger · Inventors: Metz, Hans-Joachim; Rohr, Ulrike; Baur, Ruediger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Use of coated pigment granules in electrophotographic toners and developers powder coatings and inkjet inks, The present invention relates to the use of wax-coated pigment granules as colorants in electrophotographic toners and developers powder coating , materials, inkjet inks electret fibers, and color filters, wherein the coated pigment granules, have a particle size of between 0.05 and 5 mm and a wax content of from 1 to 50%, by weight, based on the overall weight of the coated pigment granules.
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
- Filed November 1, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 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.