Pigment composition
CA 1307625 C · Owner: Kori, Yoshitake · Inventors: Nakamura, Michiei; Takahashi, Tetsujiro; Horiguchi, Shojiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pigment composition contains a pigment and a dispersant. The dispersant is a polyester compound which contains, per molecule, a residuum of at least two benzene rings coupled together, an aromatic ring having at least 8 carbon atoms or a heterocyclic ring having at leat 8 carbon atoms, and at least one ester bond as a principal bond.
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 September 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 2009.
- 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.