Method for drawing aluminum and other soft metals
CA 1203436 A · Owner: Johnson (S. C.) & Son, Inc. · Inventors: Hernandez, Pablo M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an improved method of forming containers from soft metals comprising coating the metal with a lubricant forming a cup, drawing the cup and removing the lubricant wherein the lubricant includes a compound with a melt point less than 65° C, a wax with a melt point less than 50° C, a fatty acid, an amine, thickener and water.
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 April 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 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.