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Expired Canadian patentCanada

Suspended microstructures

CA 2190077 C · Owner: The Boeing Company · Inventors: Tennant, William E.; Gergis, Isoris S.; Seabury, Charles W.

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 suspended microstructure process assembly includes a first microstructure assembly with a temporary substrate having a first surface and a first microstructure fabricated on the first surface; a second microstructure assembly including a final substrate having a second surface and a second microstructure fabricated on the second surface; connecting elements for joining the first microstructure assembly to the second microstructure assembly with a predetermined separation and alignment; and a removable bond temporarily securing the first microstructure assembly to the second microstructure assembly until the temporary substrate is removed. The connecting elements may be electrically …

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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 12, 1996 and granted November 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2018.
  • 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 12, 1996
GrantedNovember 5, 2002
Term endedNovember 12, 2016
Patent numberCA 2190077 C
Classification (IPC)H01L21/64 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedNov 12, 1996Patent grantedNov 5, 2002Term endedNov 12, 2016

Sources & verification

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