Patent Yard Sign in
Expired Canadian patentCanada

Mixer for mixing at least two free-flowing substances, especially those which react during mixing

CA 1287621 C · Owner: Sauer, Heinz · Inventors: Keggenhoff, Berthold; Zarnack, Uwe Jens; Dallmeyer, Hermann

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

The present invention is directed to a mixer for mixing at least two free-flowing, reactive or unreactive substances comprising, a) a casing having at least two inlets and at least one outlet, b) a rotatable shaft extending through the casing, c) at least one rotor disc attached to the shaft such that the rotor disc is, perpendicular to the shaft d) at least one stator disc attached to the casing such that the stator disc is, parallel to the rotor disc and has an opening such that shaft can pass through the stator disc, e) optionally at least one running wheel attached to the shaft and containing, openings such that when the shaft is rotating, the running wheel provides a pumping effect to …

Read the whole patent

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 August 13, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 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.
FiledMay 6, 1988
GrantedAugust 13, 1991
Term endedAugust 13, 2008
Patent numberCA 1287621 C
Classification (IPC)B01F5/06 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 6, 1988Patent grantedAug 13, 1991Term endedAug 13, 2008

Sources & verification

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