Patent Yard Sign in
Expired Canadian patentCanada

Composites of in-situ exfoliated graphites

CA 1330609 C · Owner: Union Carbide Corporation · Inventors: Chung, Deborah Duen Ling

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

Abstract, Composites of graphite dispersed in a solid matrix of polymeric resin, wherein intercalated graphite flakes are mixed with a liquid polymeric resin and exfoliated in-situ in the liquid resin during the curing of the resin before complete solidification of the resin. The electrical resistivity of the composites can be varied by varying the amount of graphite in the composite and can be used as a low density electrical conductor and also as an electromagnetic interference shield.

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 July 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 5, 1988
GrantedJuly 5, 1994
Term endedJuly 5, 2011
Patent numberCA 1330609 C
Classification (IPC)C08K3/04 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedOct 5, 1988Patent grantedJuly 5, 1994Term endedJuly 5, 2011

Sources & verification

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