Fat-desensitizing composition for litho printing plates
CA 1284003 C · Owner: Morita, Yasuyoshi · Inventors: Toyofuku, Kunitaka; Morita, Yasuyoshi; Michikawa, Kohei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition useful for rapidly and safely effecting a fat-desensitizing treatment for litho printing plates with a high efficiency and for, providing a hydrophilic membrane having a high durability in printing operations on the surfaces of the litho printing plates, comprises (A) a phytic acid or its functional derivative; (B) a metal salt of the formula MX1 , wherein M = a divalent metal cation X = monovalent or divalent anion and 1 = 1 or 2; (C) a glycol compound of the formula, R1 - O ? CnH2nO ?? R2 R1 and R2 = -H, -COCH3, -CH2OC2H5 , -C2H5OC4H7 , or C1-4 alkyl, n = 1, 2 or 3, and m = 1 2, 3 or 4; and (D) a polyethylene-, glycol.
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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 May 14, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 14, 2008.
- 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.