Seed colorant
CA 1313726 C · Owner: Sannan, Takanori · Inventors: Horiguchi, Shojiro; Seki, Mitsutaka; Tsuchida, Shinya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A seed colorant useful especially in coloring seeds to distinguish same from those to be used for foods is formed of an aqueous medium such as water a, dye and/or pigment of a desired hue and a binder resin, composed of the salt of chitosan and an organic acid. The seed colorant may additionally contain spherical resin particles.
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 February 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 2010.
- 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.