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Expired Canadian patentCanada

Apparatus and methods for constructing antennas using wire bonds as radiating elements

CA 2575845 C · Owner: Pfeiffer, Ullrich Richard Rudolf · Inventors: Gaucher, Brian Paul; Pfeiffer, Ullrich Richard Rudolf; Liu, Duixian

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Abstract From the Canadian patent

Antennas are provided which are constructed using one or more wires as radiating elements attached to a substrate or chip wherein wire bonding , methods can be used to attach and form loop profiles for the wires. The antennas can be integrally packaged with IC chips (e.g. IC transceivers receivers, transmitters, etc.) to build integrated wireless or RF (radio frequency) communications systems. For example an exemplary antenna device , (20) comprises a substrate (21) having a dipole antenna comprising a first wire element (22) connected to and supported by metallic pads (23) and (24) and a second wire element (25) connected to and supported by metallic pads (26) and (27). The metallic …

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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

  • Filed February 23, 2005 and granted February 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 23, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 23, 2005
GrantedFebruary 19, 2013
Term endedFebruary 23, 2025
Patent numberCA 2575845 C
Classification (IPC)H01Q23/00 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedFeb 23, 2005Patent grantedFeb 19, 2013Term endedFeb 23, 2025

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