Patent Yard Sign in
Expired Canadian patentCanada

Composite of polycrystalline diamond and/or cubic boron nitride body silicon carbide substrate

CA 1137120 A · Owner: General Electric Company · Inventors: Morelock, Charles R.

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

RD-11,486, Abstract of the Disclosure, A shaped confined structure composed of a mass of diamond and/or cubic boron nitride crystals coated with elemental non-diamond carbon in contact with a supporting silicon carbide substrate is infiltrated by fluid silicon producing a like-shaped composite of a polycrystalline body component integrally bonded to the supporting silicon carbide substrate.

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 December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 17, 1980
GrantedDecember 7, 1982
Term endedDecember 7, 1999
Patent numberCA 1137120 A
Classification (IPC)B24D5/14

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedJan 17, 1980Patent grantedDec 7, 1982Term endedDec 7, 1999

Sources & verification

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