Electrode wire for electrical discharge machining
CA 1267696 C · Owner: Yamamoto, Susumu · Inventors: Yamamoto, Susumu; Aoki, Yoshimitsu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved wire used as an electrode in electrical discharge machining is proposed which has higher tensile strength at high temperatures. It is a composite wire comprising a core of stainless steel and a covering layer of copper or copper alloy provided around the core. The diameter and the tensile strength of the wire and the percentage of the sectional area of the core to that of the entire wire are specified.
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
- Granted April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
- 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.