Metallurgical powder compositions and articles and methods utilizing the same
CA 2547582 C · Owner: Schade, Christopher T. · Inventors: Hamill, Jack A. Jr.; Schade, Christopher T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The metallurgical powder composition suspensions of the present invention include a magnetic powder having an outer oxide layer suspended in a carrier fluid. Magnetic powders include iron-based powders such as for example, powders of iron pre-alloyed with other elements. Alloying materials include columbium, silicon, calcium, manganese magnesium, carbon, boron, aluminum, titanium molybdenum, chromium, copper, nickel, gold vanadium, phosphorus, or , combinations thereof Carrier fluids include silicon-based fluids and/or oils such as hydrocarbon oils. The outer oxide layer includes alloy materials that are reacted/complexed with oxygen. Magnetic powders exhibit low rates of oxidation …
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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 27, 2004 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 27, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.