Powder metal alloy process
CA 2104605 C · Owner: Stackpole Limited · Inventors: Shivanath, Rohith; Jones, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process of forming a sintered article of powder metal comprising: selecting elemental iron powder; determining the desired properties of said sintered article and, selecting, a quantity of carbon and ferro alloy from the group of ferro manganese, ferro chromium, ferro molybdenum ferro vanadium, ferro silicon and ferro boron;, grinding said ferro alloy to a mean particle size of approximately 8 to 12 microns;, introducing a lubricant while blending the carbon ferro alloy, with said , elemental iron powder; pressing the mixture to form the article; and then high temperature sintering, the article at a temperature between 1,250°C and 1,350°C in a neutral or reducing, atmosphere; so as …
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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 September 9, 1992 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2014.
- 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.