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Expired Canadian patentCanada

Adhesive composition, process and product

CA 1340477 C · Owner: Lautenschlaeger, Friedrich Karl Wolfgang · Inventors: Bumanlag, Reynaldo Gungab; Lautenschlaeger, Friedrich Karl Wolfgang; Box, James Allen

CIPO record

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

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Abstract From the Canadian patent

Command-cure compositions especially for use in insulated window assemblies permit the composition to be rendered adhesively bonding at a selected time interval after formation of the assembly to firmly bond opposed surfaces of the assembly; a particular adhesive in strip or tape form comprises an adhesive polymer composition which is transparent to curing radiation especially UV, and curable in the presence of the radiation; the curing is inhibited by oxygen; the composition is solvent free and cures to a mass resistant to water; surfaces of the adhesive exposed to oxygen remain tacky and uncured; the adhesive is especially useful in window structures in which adhesion of the tacky surface …

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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 March 30, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 6, 1987
GrantedMarch 30, 1999
Term endedMarch 30, 2016
Patent numberCA 1340477 C
Classification (IPC)C08J3/24 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006200920122015Application filedNov 6, 1987Patent grantedMarch 30, 1999Term endedMarch 30, 2016

Sources & verification

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