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Expired Canadian patentCanada

Fluoride ion-selective electrodes based upon superionic conducting ternary compounds and methods of making

CA 1322635 C · Owner: Dade Chemistry Systems Inc. · Inventors: Pelosi, Lorenzo Fred; Kobos, Robert Kenneth

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Abstract From the Canadian patent

28, Title IP-0558, PLUORIDE ION-SELECTIVE ELECTRODES BASED UPON SUPERIONIC CONDUCTING TERNARY COMPOUNDS AND METHODS OF MAKING, ABSTRACT This invention relates to fluoride, ion-selective electrodes which employ as the active, Dembrane component, a ternary compound of the type MxLnyF3-x, where M is an alkaline earth metal ion such as calcium, strontium or barium and Ln is a, lanthanide metal ion such as lanthanum cerium, prosiodymium, neodymium, promethium samarium and, europium. D300Y, 28

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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 October 5, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 5, 2010.
  • 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 2, 1989
GrantedOctober 5, 1993
Term endedOctober 5, 2010
Patent numberCA 1322635 C
Classification (IPC)G01N27/30 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJune 2, 1989Patent grantedOct 5, 1993Term endedOct 5, 2010

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