Use of an oxygen-free copper deoxidized by boron or lithium as material for hollow sections
CA 1264947 C · Owner: Hecht, Meinhard · Inventors: Rethmann, Werner; Hecht, Meinhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a hollow section of oxygen-free copper deoxidized with boron or lithium, which is to be pressed over a bridge tool, the percentage of the deoxidizing agent boron or, lithium, in the finished product is 0.01% to 0.05%. The electrical conductivity of the finished section is at least 95% IACS.
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 January 30, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 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.