Patent Yard Sign in
Expired Canadian patentCanada

Rotary processor apparatus and method for extensive and dispersive mixing

CA 1296713 C · Owner: Siegel, Arthur D. · Inventors: Siegel, Arthur D.; Yang, Jan-Chin; Tadmor, Zehev

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

A rotary processor for high-shear processing of plastic or polymeric materials comprises a rotor having end discs and at least one mixing disc therebetween the, rotor closely surrounded by a housing to defined annular processing chambers flanking each mixing disc with a, high-shear-mixing transfer gap defined between the mixing disc and the housing. Channel blocks are deployed at circumferentially spaced apart positions in adjacent chambers to cause transfer of material through the transfer gaps, with dispersive mixing occurring in the transfer gaps. Some embodiments have plural channel blocks in the chambers, evenly spaced apart. The channel blocks extend generally into and to the bottom …

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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.
FiledSeptember 1, 1988
GrantedMarch 3, 1992
Term endedMarch 3, 2009
Patent numberCA 1296713 C
Classification (IPC)B01F7/10 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 1, 1988Patent grantedMarch 3, 1992Term endedMarch 3, 2009

Sources & verification

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