Electrodepositable coating composition containing bismuth and amino acid materials and electrodeposition method
CA 2264704 C · Owner: Ppg Industries Ohio, Inc. · Inventors: Bethoski, Joseph A.; Kollah, Raphael O.; Scott, Matthew S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrodepositable coating composition is provided comprising (a) an active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (b) a curing agent for transurethanation transamidation or , transesterification curing like at least a partially capped polyisocyanate curing agent; and (c) a catalytic mixture of bismuth and an amino acid or amino acid precursor. Optionally, an auxiliary acid may be present to increase the effectiveness of the amino acid in the mixture with bismuth.
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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 September 2, 1997 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 2, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 2, 2019.
- 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.