Cobalt base alloy coating for a guide bar of a chain saw
CA 1297319 C · Owner: Doren, Horst · Inventors: Wernicke, Klaus-Dieter; Noll, Wilfried; Stehle, Hans-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cobalt base alloy includes the alloy elements of nickel, chromium, tungsten, silicon and carbon with the nickel content being at least 25 percent by weight. The cobalt base alloy is applied as a coating material for guide bars of saw chains. The alloy has a high hardness with low brittleness by means of which an improved resistance to wear is achieved.
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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- 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.