Multilayer coated corrosion resistant metal pipe
CA 1292154 C · Owner: Takahashi, Teruhisa · Inventors: Takahashi, Teruhisa; Kajiyama, Masashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A corrosion resistant metal pipe having an outer surface coated with a zinc film, a chromate film an inter-, mediate layer consisting substantially of an epoxy resin and a polyvinyl fluoride film formed one upon another in the order listed.
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 November 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 2008.
- 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.