Wire electrode
CA 2300675 C · Owner: Barthel, Bernd · Inventors: Neuser, Bernd; Barthel, Bernd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wire electrode, and a method for making it for use in spark-erosive cutting having an electrically conducting core essentially absorbing the tensile forces. The wire electrode has furthermore a coating which wears during erosion which coating consists of two layers. Such a wire elects rode is suited for both quick cutting and also far fine cutting of workpieces. The wire electrode has for this purpose an inner layer of the coating which Nerves the quick cutting process and consists of an essentially homogenous alloy. Whereas the outer layer of the coating is provided for the fine cutting and has a zinc content of above 80% whereby the layer thickness of the outer layer lies at 1/5 of the …
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 March 14, 2000 and granted December 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2022.
- 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.