Bimetallic pipe for corrosive fluids
CA 1194348 A · Owner: Martinez Garin De Lazcano, Jose Ignacio · Inventors: Bilbao Eguiguren, Jesus Maria; Martinez Garin De Lazcano, Jose Ignacio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a process for forming a bimetallic pipe having an outer steel shell and an inner lining resistant to corrosive fluids passing through the pipe involving, upsetting a steel ingot having a generally square outer cross-section and housing a generally circular cylindrical core of the lining material, the billet having a generally circular cylindrical outer cross-section after the upsetting the upset billet then being axially pierced by a hot perforating tool. Also claimed is the resultant compound metallic body.
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 October 1, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2002.
- 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.