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Expired Canadian patentCanada

Asynchronous marx generator utilizing photo-conductive semiconductor switches

CA 1293531 C · Owner: Government Of The United States, As Represented By The Secretary Of The Army · Inventors: Kim, Anderson H.; Bovino, Lawrence J.; Weiner, Maurice

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

A Marx high voltage generator with a fast rise time. Photoconductive semiconductor switches are sequentially triggered by a single laser via fiber optic bundles of different lengths. The switches serve to series connect a group of charged capacitors. Output is taken from the last capacitor which receives the voltage accumulated on all of the previous capacitors. Proper timing of the activation of each switch produces a fast rise time.

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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 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 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.
FiledSeptember 15, 1988
GrantedDecember 24, 1991
Term endedDecember 24, 2008
Patent numberCA 1293531 C
Classification (IPC)H02M3/18 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedSep 15, 1988Patent grantedDec 24, 1991Term endedDec 24, 2008

Sources & verification

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