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Expired Canadian patentCanada

Digital analyzer for determining liquidus temperature of metals and alloys

CA 1108758 A · Owner: Institut Kibernetiki Akademii Nauk Ukraniskoi Ssr · Inventors: Skurikhin, Vladimir I.; Zhitetsky, Leonid S.; Fainzilberg, Leonid S.

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Abstract From the Canadian patent

Abstract of the Disclosure According to the invention, the digital analyzer for determining the liquidus temperature of metals and alloys comprises a converter of the actual temperature of metals and alloys to a digital pulse code which is connected via a synchronization unit, to a reversible counter and to a discriminator of local temperature increments out-, puts of said converter being connected to reset inputs of a first time interval discriminator and to reset inputs of a second time interval discriminator. Count inputs of the first and second time interval discriminators are connected via the synchronization unit to a clock pulse generator. An intermediate output of the first 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 September 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 12, 1978
GrantedSeptember 8, 1981
Term endedSeptember 8, 1998
Patent numberCA 1108758 A
Classification (IPC)G01N25/02 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJune 12, 1978Patent grantedSep 8, 1981Term endedSep 8, 1998

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