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Expired Canadian patentCanada

Flexible piston-type charge forming and handling chamber

CA 1213252 A · Owner: Steridose Systems Ab · Inventors: Lofgren, Peter; Arthun, Nils

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 filling device for sterile filling of containers. A flexible temporary storage container is placed in a dosage chamber and exposed to external over-pressure and under-pressure, respectively. The filling goods is sucked into the temporary storage container and pressed out to the final storage container. A device for fine adjustment of the volume of the chamber has the shape of an adjustable membrane.

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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 October 28, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 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.
FiledJune 26, 1984
GrantedOctober 28, 1986
Term endedOctober 28, 2003
Patent numberCA 1213252 A
Classification (IPC)B65B1/00 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedJune 26, 1984Patent grantedOct 28, 1986Term endedOct 28, 2003

Sources & verification

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