Flux cored wires for gas shielded arc welding
CA 2212303 A1 · Owner: Suda, Kazutoshi · Inventors: Ishide, Hirotoshi; Miura, Toshihiro; Suda, Kazutoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flux cored wires provide high arc stability good bead, shape and high toughness in gas shielded arc welding using mixed gases containing argon and carbon dioxide. A flux cored wire for gas shielded arc welding with a mixed gas comprising argon and carbon dioxide which comprises:, a seam-welded steel sheath; and a core filled in the steel sheath and comprising, all in weight percent: a slag and arc stabilizer comprising 4.0 to 6.0 % TiO2, 0.2 to 0.8 % SiO2, 0.4 to 0.8 % ZrO2 0.2 to 0.8 % Al2O3, 0.06 to 0.25 % Na2O + K2O and 0.1 to 0.4 % metal fluoride;, an alloying agent and metal deoxidizer comprising 0.03 to 0.06 % C, 0.20 to 0.80 % Si 1.50 to 2.20 %, Mn, and 0.30 to 0.60 % Mg; and not …
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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 July 31, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2019.
- 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
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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.