Composition for cationic electrodeposition coating
CA 2008194 C · Owner: Shinto Paint Co. Ltd. · Inventors: Shirasaka, Akitoshi; Tooyama, Minoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved composition for cationic electrodeposition coating contains a water dispersion of a cationic aqueous resin and inner-crosslinked micro-resin particles The micro-resin, particles comprise an inner-crosslinked addition polymer of an active hydrogen-containing compound with an active double bond-containing compound having cationic groups. The composition is superior in preventing corrosion at the edge portions of articles to be coated.
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
- Filed January 19, 1990 and granted June 1, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2012.
- 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.