Powdery mixture for flame spray mending
CA 2291227 A1 · Owner: Kawasaki Steel Corporation · Inventors: Matsunaga, Hisahiro; Kumagai, Masato; Fukushima, Yasumasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flame-spraying repair material which exhibits a high crystallinity just after the flame spraying and is effective in forming a dense repair layer by flame spraying under wide flame-spraying conditions. This material comprises in terms of oxide, at least 89 wt.% of SiO2 and 2.0 (exclusive) to 4.0 wt.% , of Na2O and/or 0.2 (exclusive) to 4.0 wt.% of Li2O and exhibiting a , crystallinity of 80 % or above and a compression strength of 200 kgf/cm2 or above after the flame spraying. Another flame-spraying repair material which exhibits a high crystallinity just after the flame spraying and is effective in forming a dense repair layer by flame spraying in spite of its containing more or …
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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 October 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2020.
- 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.