Thermosetting epoxy powder coatings having improved degassing properties
CA 2296633 C · Owner: Seelig, Carryll A. · Inventors: Schreffler, Dean A.; Greth, Stacy L.; Ruth, William G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided are low temperature curing thermosetting epoxy powder coating compositions comprising at least one non-crystalline epoxy resin at least one , crystalline, epoxy resin a curing agent, and a cure catalyst. Coatings made from such powder, compositions exhibit a substantial reduction in bubble entrapment enough to , prevent a, visible haze from forming in the coating when cured at low temperatures , demanded by brass substrates, while the powders from which the coatings are made still exhibit good, storage stability and melt-processability.
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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 January 18, 2000 and granted December 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2022.
- 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.