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Expired Canadian patentCanada

Mixing device and method for its manufacture

CA 1319679 C · Owner: Widen, Jeffrey C. · Inventors: Widen, Jeffrey C.; Kennedy, Richard B.

CIPO record

Overview

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

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Abstract From the Canadian patent

An improved mixing device for mixing at least two of a plurality of pressurized liquids, the device consisting of hollow tubular member defined as having a longitudinal axis, one or two open ends and an interior wall member one, of the open ends having at least two cut-out portions generally symmetrically disposed about the axis a segmental, slot member generally radially disposed in the hollow tubular member between each of the cut-out portions for receiving a supporting projection in locking engagement therewith, and an envelope mounted on and extending about each of the cut-out portions for receiving and encompassing a conduit member terminating at and within each of the cut-out …

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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 June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
  • 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 3, 1989
GrantedJune 29, 1993
Term endedJune 29, 2010
Patent numberCA 1319679 C
Classification (IPC)B01F7/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedAug 3, 1989Patent grantedJune 29, 1993Term endedJune 29, 2010

Sources & verification

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