Pigment dispersing agent
CA 1308331 C · Owner: Yamamoto, Toshio · Inventors: Yamamoto, Toshio; Matsubara, Yoshiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure The invention provides a pigment dispersing agent being a product obtained by reacting a component A of an amine compound having one or more active hydrogen atom per one molecule and a weight average molecular weight of 60~30,000 with at least one component B represented by the following general formula (I) (II), or (III) :, (I), (II), (III), wherein R1 is an alkyl group having a carbon number of 1~20 or a residue of aromatic monocarboxylic acid R2 is, a phenyl group, an alkyl group having a carbon number of 5~19, -CH2-O-?-R6 group (R6 is an alkyl group or an aromatic group having a carbon number of 3~17) or -CH2-O-R7 group (R7 is an alkyl group or an aromatic …
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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 October 6, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 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.