Cathodic electrocoating process and composition
CA 1048672 A · Owner: Ppg Industries, Inc. · Inventors: Leiner, Howard H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to novel compositions and to a process for preparing an electrocoated article which comprises maintaining a liquid bath composition having dispersed therein: (a) particles of an amine-containing organic coating material having a positive charge in combination with (b) a blocked multifunctional isocyanate; maintaining a first electrode in intimate electrical contact with said bath as anode; immersing in said bath as a second electrode a conductive article at least a portion of which bears a negative charge as cathode;, passing an electric current through said electrodes and said bath thereby electrocoating said conductive article;, and heating said electrocoated …
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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 February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 1996.
- 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.