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Expired Canadian patentCanada

Haloalkyl phosphates with increased hydrolytic stability

CA 1085867 A · Owner: Velsicol Chemical Corporation · Inventors: Albright, James A.

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Abstract From the Canadian patent

Disclosed are haloalkyl phosphates of the generic formula wherein each X is independently selected from chlorine bromine, and hydrogen, wherein both Ys are identical and selected from chlorine and bromine, wherein each Z is independently selected from chlorine and bromine, and wherein each R is independently selected from hydrogen, alkyl, and halogenated alkyl groups wherein, each alkyl group contains from 1 to about 3 carbon atoms and each halogenated group contains from 1 to about 3 halogen substituents selected from chlorine and bromine.

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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 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 7, 1977
GrantedSeptember 16, 1980
Term endedSeptember 16, 1997
Patent numberCA 1085867 A
Classification (IPC)C07F9/11 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedFeb 7, 1977Patent grantedSep 16, 1980Term endedSep 16, 1997

Sources & verification

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