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Expired Canadian patentCanada

Antenna-effect suppressor method and device particularly for thermocouples and other dissimilar metal conductor combinations

CA 2198162 C · Owner: Omega Engineering, Inc. · Inventors: Hollander, Milton Bernard; Stewart, Russell; Mckinley, William Earl

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to electrical devices which include at least one pair of dissimilar metal members with respective surfaces for bringing into contact with each other or with other receptors to establish an electrical connection and, antenna-effect inhibiting means such as a ferrite composition are disposed adjacent to the connection surface of at least one of the contact members. In a form of the invention for use with single wires or a pair of multiple wires each wire is, provided with all individual antenna-effect inhibiting means such as a ferrite housing, adjacent to a connector thereon. The invention also provides a method of making an electrical connector, having at least two …

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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 21, 1997 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2019.
  • 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 21, 1997
GrantedJanuary 30, 2001
Term endedFebruary 21, 2017
Patent numberCA 2198162 C
Classification (IPC)G01K7/02 +1 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedFeb 21, 1997Patent grantedJan 30, 2001Term endedFeb 21, 2017

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