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Expired Canadian patentCanada

Holding container

CA 1295436 C · Owner: Mitsui Toatsu Chemicals, Inc. · Inventors: Gotoh, Yoshihisa; Takahashi, Toshiaki; Kawamata, Motoo

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 holding container made of a polyether ether ketone resin is described. The container is suitable for use in holding one or more substrates upon fabrication of the corresponding number of thin-film semiconductor substrates which are useful in driving a planar display.

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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 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 2009.
  • 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 5, 1987
GrantedFebruary 4, 1992
Term endedFebruary 4, 2009
Patent numberCA 1295436 C
Classification (IPC)H01L23/02 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 5, 1987Patent grantedFeb 4, 1992Term endedFeb 4, 2009

Sources & verification

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