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Expired Canadian patentCanada

Method for removing bubbles from container made of synthetic resin filled with solution and device thereof

CA 1291734 C · Owner: Kuwabara, Chihiro · Inventors: Kuwabara, Chihiro

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

A method for removing bubbles from a container made of synthetic resin filled with solution comprises imparting movement to the container made of synthetic resin filled with solution gradually so as to cause the surface of the solution to contact the whole inner area of the container without any shock from outside, to change the conditions in the container so as to discharge bubbles attached to the inner-wall of the container to the outside of the solution to remove bubbles in the container completely.

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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 November 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 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.
FiledFebruary 3, 1988
GrantedNovember 5, 1991
Term endedNovember 5, 2008
Patent numberCA 1291734 C
Classification (IPC)B01F9/02 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedFeb 3, 1988Patent grantedNov 5, 1991Term endedNov 5, 2008

Sources & verification

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