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Expired Canadian patentCanada

Channel electron multiplier

CA 1283692 C · Owner: K And M Electronics, Inc. · Inventors: Knak, James L.; Schmidt, Kenneth C.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

of the Invention, A channel electron multiplier having a semiconductive secondary emissive coating on the walls of said channel wherein said electron multiplier is a monolithic ceramic body and said channel therein preferably is three dimensional.

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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 April 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 1987
GrantedApril 30, 1991
Term endedApril 30, 2008
Patent numberCA 1283692 C
Classification (IPC)H01J43/04 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 10, 1987Patent grantedApril 30, 1991Term endedApril 30, 2008

Sources & verification

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