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Expired Canadian patentCanada

Alkoxy titanate salts useful as coupling agents

CA 1103266 A · Owner: Kenrich Petrochemicals, Inc. · Inventors: Sugerman, Gerald; Monte, Salvatore J.

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Abstract From the Canadian patent

Novel organotitanates having the formula (RO)2Ti(A)x(B)y (RO)Ti(OCOR')p(OA?)q or (RO)Ti(OCOR"")3 are useful in treating comminuted inorganic materials. Such treated inorganic materials are useful as fillers, pigments reinforcements and, chemical reactants in polymers.

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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 June 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 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.
FiledMay 10, 1976
GrantedJune 16, 1981
Term endedJune 16, 1998
Patent numberCA 1103266 A
Classification (IPC)C07F7/28 +2 more

Timeline

Timeline From CIPO dates

19771980198319861989199219951998Application filedMay 10, 1976Patent grantedJune 16, 1981Term endedJune 16, 1998

Sources & verification

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