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Expired Canadian patentCanada

Liner bag used for container

CA 2003257 C · Owner: Niioda, Yutaka · Inventors: Yuasa, Yoshiaki; Yasuzawa, Kazuo; Naniwa, Hisamoto

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 liner bag used for a container having a bag main body comprising respective races conforming the inner wall shape of the container when spread at the inside thereof and retained by a bulkhead detachably mounted to a rear side, i.e. a side of a door of the container and a pull-, out sheet laid over a bottom face of the bag main body for transporting grain cargoes, etc. loaded on the upper surface thereof toward the door, wherein a rear end of a bottom face of the bag main body is extended bendably rearwardly beyond a rear face, the rear end of the pull-out sheet is foldably pulled-out of the bag main body through an opening formed in the lower end of the rear race independent of 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

  • Filed November 17, 1989 and granted October 18, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 17, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 17, 1989
GrantedOctober 18, 1994
Term endedNovember 17, 2009
Patent numberCA 2003257 C
Classification (IPC)B65D5/56 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedNov 17, 1989Patent grantedOct 18, 1994Term endedNov 17, 2009

Sources & verification

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