Ceramic welding process and powder mixture for use in same
CA 2017622 C · Owner: Fosbel International Ltd. · Inventors: Robyn, Pierre; Moreau, Jean; Zvosec, Charles Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
15, In ceramic welding processes, oxidising gas and a mixture of refractory and fuel powders are projected against a surface and the fuel is burnt to generate, sufficient heat that the refractory powder becomes at least partially melted or, softened and a cohesive refractory mass is progressively built up against that surface. In order to reduce any tendency for the weld mass to include a lowgrade, refractory phase and thus promote the refractoriness of that weld mass the , fuel, powder is present in a proportion of not more than 15% by weight of the total mixture and comprises at least two metals selected from aluminium magnesium, chromium and zirconium, in that at least the major part …
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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 May 28, 1990 and granted July 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2012.
- 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.