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Expired Canadian patentCanada

Apparatus for manufacturing air-cushion dispatch packages

CA 1286136 C · Owner: Vereinigte Papierwarenfabriken Gmbh · Inventors: Richter, Karl-Heinz; Kucha, Georg; Kurz, Hubert

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

In an apparatus for manufacturing air-cushion dispatch packages com-, prising an unwinding mechanism (11 24) for paper webs (14, 15), and for at least one air-cushion foil web (27 30), means (32, 33, 34, 35, 36) for sealing and subsequently cooling the paper webs (14, 15) with each introduced web of air-cushion foil (27 30) in, the region of the edge of the dispatch package traction means, (40, 44) for the paper webs (14 15) with sealed-in web of air-, cushion foil (27 30), and means (43, 45) for cutting the dispatch packages to the desired format, surface sealing means (32) which are arranged upstream of the sealing and cooling means (33-36), web control means (42), which are arranged …

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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 July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 9, 1987
GrantedJuly 16, 1991
Term endedJuly 16, 2008
Patent numberCA 1286136 C
Classification (IPC)B31B70/00 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 9, 1987Patent grantedJuly 16, 1991Term endedJuly 16, 2008

Sources & verification

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