Copper alloy
CA 2563097 C · Owner: Oishi, Keiichiro · Inventors: Oishi, Keiichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a copper alloy. The copper alloy consists essentially of Cu : 69 to 88 mass%, Si : , 2 to 5 mass%, Zr : 0.0005 to 0.04 mass% P: 0.01 to 0.25 mass%, and Zn : , balance; has relation of in , terms of a content of an element a a mass%, f0 = Cu - 3.5Si - 3P = 61 , to 71 f1 = P/Zr = 0.7 , to 200, f2 = Si/Zr = 75 to 5000 and f3 = Si/P = 12 to 240; has a , metal structure that contains a phase and, K phase and/or y phase, and has relation of in terms of a content , of a phase b, b% in an , area rate, f4 = .alpha. +.gamma. + K >= 85 and f5 =.gamma. + K + 0.3µ -.beta. = 5 to 95; and has an average grain diameter of 200 µm or less in a macrostructure when melted and solidified.
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 August 10, 2005 and granted May 1, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2025.
- 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.