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Expired Canadian patentCanada

Antenna lamination technique

CA 1333503 C · Owner: Alfing, Norman L. · Inventors: Alfing, Norman L.

CIPO record

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Abstract From the Canadian patent

An antenna system and technique for laminating a dielectric substrate (14) to an antenna housing (12) which prevents separation of the dielectric substrate (14) from the housing (12). This is accomplished by confining an antenna assembly (10) inside a laminating fixture (24). Heat is then applied to the fixture (12). This causes the dielectric substrate (14) to become somewhat plastic and also to expand. This expansion results in great pressure being exerted between the dielectric (14) and the housing (12). When the assembly is allowed to cool the dielec-, tric (14) adheres to the housing (12). This prevents separation of the housing (12) from the dielectric (14). The result is an antenna …

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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 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 13, 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.
FiledJuly 27, 1989
GrantedDecember 13, 1994
Term endedDecember 13, 2011
Patent numberCA 1333503 C
Classification (IPC)H01Q1/40 +1 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJuly 27, 1989Patent grantedDec 13, 1994Term endedDec 13, 2011

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