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Expired Canadian patentCanada

Modular apparatus for extruding hot viscous liquids

CA 1090118 A · Owner: Nordson Corporation · Inventors: Akers, Larry D.; Scholl, Charles H.

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

THERMOPLASTIC ADHESIVE DISPENSER HAVING AN INTERNAL HEAT EXCHANGER" Abstract of the Disclosure, Apparatus for dispensing hot viscous liquids such as molten adhesives, either in a continuous bead or as spaced unitary deposits. In preferred form, the apparatus includes a heat exchanger in the form of a fluid manifold which functions to elevate and maintain the temperature of the molten adhesive, just prior to dispensing it above that, temperature level at which the molten adhesive is supplied to the apparatus. - 1 -

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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 November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 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.
FiledAugust 8, 1977
GrantedNovember 25, 1980
Term endedNovember 25, 1997
Patent numberCA 1090118 A
Classification (IPC)B67D7/80 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedAug 8, 1977Patent grantedNov 25, 1980Term endedNov 25, 1997

Sources & verification

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