Arc hardfacing rod
CA 2120332 C · Owner: Kelley, Harold E. · Inventors: Kelley, Harold E.; Newman, Harold C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arc hardfacing rod for producing a hard surface Fig. 7 including a tubular member a filler material, an insulating, coating and a plurality of discrete metal carbide particles set within the insulating coating such that a surface of a portion of the metal carbide particles is uncovered. The filler carbide particles include tungsten carbide particles titanium carbide panicles, tantalum carbide particles niobium carbide particles, zirconium carbide panicles vanadium carbide particles, hafnium carbide particles, molybdenum carbide particles chromium carbide particles, silicon carbide particles and boron carbide particles cemented, composites and mixtures thereof. Adhered to the exterior …
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
- Filed December 1, 1992 and granted June 9, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2014.
- 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.