Surface treated steel sheet for paint coating
CA 1215934 A · Owner: Nippon Kokan Kabushiki Kaisha · Inventors: Hara, Tomihiro; Yamashita, Masaaki; Ogawa, Masahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A steel sheet with its surface prepared for paint coating is disclosed. The surface treated steel sheet comprises a base sheet, and an iron-zinc alloy film plated on the base sheet in an amount of at least 0.1g/m2 and having an iron content of from 3 to 30%. A composite silicate resin film is coated on the iron-zinc alloy film in an amount of from 0,05 to 5.0g/m2. The resin film is composed of an acrylic copolymer an epoxy, resin, a silica sol and a trialkoxysilane compound. The treated surface provides superior paintability degrease resistance, and corrosion resistance after pain coating.
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 December 30, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 2003.
- 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.