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Expired Canadian patentCanada

An adsorption-treating apparatus

CA 1208103 A · Owner: Toray Industries, Inc. · Inventors: Inoue, Takehisa; Miwa, Kishio; Sakaya, Kazuyuki

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

The present invention relates to a rotary valve for distributing a fluid in various directions and collecting fluids from various directions. The rotary valve consists of two stator disks having passages that constitute a part of complete passages through which the fluid runs, and a rotor disposed between the two stator disks and having passages which communicate with selected at least two of the passages in the stator disks to form complete passages through which the fluid runs. Each time the rotor is turned intermittently different passages are formed through which the fluid runs.

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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 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 2, 1983
GrantedJuly 22, 1986
Term endedJuly 22, 2003
Patent numberCA 1208103 A
Classification (IPC)F16K11/06 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedFeb 2, 1983Patent grantedJuly 22, 1986Term endedJuly 22, 2003

Sources & verification

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