Electrocoating composition
CA 2000649 A1 · Owner: Nishikawa, Shigeo · Inventors: Fukushima, Yutaka; Inoue, Tsuyoshi; Tsuchiya, Yasuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an electrocoating composition comprising a copolymer having both an aminimide group and an amino group, and a modified polyepoxide resin. The electrocoating composition of the present invention comprises;, (A) 10 to 49 % by weight of a vinyl polymer containing at least one amino group and at least one group represented by, (1), wherein R1 and R2 respectively represent a hydrogen atom, an alkyl group or an aryl group, R3 represents an alkyl group or a hydroxyalkyl group R2 and R3 together form a heterocyclic ring having a nitrogen atom, X represents an alkyl group an, aryl group or an aralkyl group, n is an integer of 1 to 4 and m is 0 or 1, (B) 51 to 90 % by …
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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
- Filed October 13, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2011.
- 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.