Cavitation erosion resistant steel
CA 2220727 C · Owner: Stoody Deloro Stellite, Inc. · Inventors: Menon, Ravi; Wu, James B. C.; Mosier, William C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cavitation erosion resistant alloy comprising about 10 to 40 percent by weight of one or more carbide formers including some chromium 5 to 15 percent , by weight cobalt, 5 to 15 percent by weight manganese 3.5 to 7.0 percent by , weight silicon 1.8 to 4.8 percent by weight nickel, 0.15 to 3.5 percent by weight carbon plus boron, up to 0.3 percent by weight nitrogen and the balance being iron plus impurities.
Read the whole patent
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 9, 1996 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2018.
- 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.