Patent Yard Sign in
Expired Canadian patentCanada

Composite magnetic material and its production process

CA 1294677 C · Owner: Commissariat A L'Energie Atomique · Inventors: Sajer, Jean-Michel; Miltenberger, Bernard

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

The composite material comprises an alternation of amorphous magnetic material films based on cobalt niobium and zirconium and electrically insulating material films (4), each magnetic film being formed from several blocks (6) separated from one another by electrically insulating joints (8), the total volume (Vp) occupied by the magnetic blocks and the total volume (Vj) occupied by the insulating joints being such that the ratio (Vp/Vj) varies between 10 and 50. This material can be used in a wide range of applications with electromagnetic fields having a frequency between 50 MHz and several GHz. (Fig. 1)

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 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2009.
  • 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 15, 1988
GrantedJanuary 21, 1992
Term endedJanuary 21, 2009
Patent numberCA 1294677 C
Classification (IPC)H01F10/16 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 15, 1988Patent grantedJan 21, 1992Term endedJan 21, 2009

Sources & verification

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