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Expired Canadian patentCanada

Apparatus for mixing at least two reactive plastic materials

CA 1308409 C · Owner: Krauss-Maffei A.G. · Inventors: Schneider, Fritz W.

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

A cylindrical mixing chamber opens into a subsequent cylindrical quieting chamber at an acute angle alpha against its direction of outflow to avoid spattering during the output of a plastic mixture formed of reactive plastic components from a mixing apparatus.

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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 October 6, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 19, 1989
GrantedOctober 6, 1992
Term endedOctober 6, 2009
Patent numberCA 1308409 C
Classification (IPC)B29B7/76

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJune 19, 1989Patent grantedOct 6, 1992Term endedOct 6, 2009

Sources & verification

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