Patent Yard Sign in
Expired Canadian patentCanada

Method of bonding a tool material to a holder and tools made by the method

CA 1322437 C · Owner: Cmb Packaging (Uk) Limited (Reg. No. 178 090) (Formerly Metal Box Public Limited Company) · Inventors: Mistry, Pravin

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

In a method of joining a metal matrix composite (cermet) or ceramic tool material 1 to a metallic holder 2 by diffusion bonding through an intermediate metallic layer, the tool material 1 includes at least one carbide, nitride or boride in the matrix. In one example, the tool material includes titanium carbide and titanium nitride in the metal matrix. The intermediate metallic layer is chosen from a group consisting of nickel titanium, and tungsten. The tool holder metal 2 is a ferrous alloy. The intermediate metallic layer is placed between the tool material and the metallic holder and heat and pressure are applied for a controlled period to diffusion bond the tool material to the metallic …

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 September 28, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 28, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 7, 1989
GrantedSeptember 28, 1993
Term endedSeptember 28, 2010
Patent numberCA 1322437 C
Classification (IPC)B23K20/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 7, 1989Patent grantedSep 28, 1993Term endedSep 28, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.