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Expired Canadian patentCanada

Spin pot

CA 1095671 A · Owner: Allied Chemical Corporation · Inventors: Turner, Garland L.; Cooksey, James J.

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

INVENTION: SPIN POT, INVENTORS: JAMES JUDSON COOKSEY and GARLAND LINWOOD TURNER, ABSTRACT OF THE DISCLOSURE A spin pot, for the extrusion of one or more ends of multifilament, synthetic fibers is disclosed. The spin pot features a top cap comprising a flow inlet passage and between 3 and 80 substantially identical polymer delivery channels. The flow inlet passage brings molten polymer to an area the central axis of which substantially coincides with the central axis of the top cap. The delivery channels communicate with the flow inlet passage in this area and branch radially therefrom at substantially equal intervals to open at the lower surface of the top cap into a distribution space. The …

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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 February 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 17, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 7, 1976
GrantedFebruary 17, 1981
Term endedFebruary 17, 1998
Patent numberCA 1095671 A
Classification (IPC)D01C3/00 +1 more

Timeline

Timeline From CIPO dates

19771980198319861989199219951998Application filedJuly 7, 1976Patent grantedFeb 17, 1981Term endedFeb 17, 1998

Sources & verification

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