Epoxy resin powder coating composition
CA 1332017 C · Owner: Kitagawa, Katugi · Inventors: Shinozuka, Akira; Kitagawa, Katugi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An epoxy resin powder coating composition is disclosed, which comprises 100 parts by weight of bisphenol A type mixed resin having a number average molecular weight from 1,700 to 4,500 comprising a bisphenol A type epoxy resin (A) having a number average molecular weight from 2,500 to 8,000 and a bisphenol A type epoxy resin (B) having a number average molecular weight from 300 to 1,000, 5 to 20 parts by weight of polyvinyl butyral resin or polyvinyl formal resin a hardener, and a filler, wherein said hardener is a mixture of an imidazole base high hardener and an imidazole base low hardener.
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
- Granted September 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 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.