Stable low fume stainless steel welding electrode
CA 2036834 A1 · Owner: Inco Alloys International, Inc. · Inventors: O'Donnell, David B.; Bishel, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a coated electrode suitable for welding stainless steel. The coated electrode uses a stainless steel core wire. The flux contains by weight percent a total of 0 to 14.5 alkali metal and aluminum fluoride, about 0.5 to 12.5 cerium fluoride, a total of about 10 to 30 alkali metal and manganese carbonate, about 2 to 25 cerium oxide plus zirconium about 0 to 25, chromium, about 0 to 10 manganese about 5 to 15 total metal, fluorides, and balance rutile. A binder holds the flux to the stainless steel core.
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 February 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2013.
- 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.