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Expired Canadian patentCanada

Optical soliton generator

CA 2108097 C · Owner: Veselka, John J. · Inventors: Korotky, Steven Kenneth; Veselka, John J.

CIPO record

Overview

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

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Abstract From the Canadian patent

An optical pulse generator for producing a soliton pulse train having a modulator which amplitude and phase modulates an optical frequency output of a continuous optical wave source. The modulator is driven by first and second harmonically related continuous sinusoidal waves from first and second CW voltage sources and the generator includes a pulse compression means for producing at the output of the generator a soliton pulse train.

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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 October 8, 1993 and granted September 23, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 8, 1993
GrantedSeptember 23, 1997
Term endedOctober 8, 2013
Patent numberCA 2108097 C
Classification (IPC)H04B10/12 +1 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedOct 8, 1993Patent grantedSep 23, 1997Term endedOct 8, 2013

Sources & verification

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