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Expired Canadian patentCanada

Seal for a semiconductor device and method therefor

CA 1070853 A · Owner: Solid State Scientific Inc. · Inventors: Pomante, Louis N.

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 seal for a semiconductor device in which the semiconductor has a major surface with a metal layer overlying the major surface. An insulating layer of glass is formed on the metal layer and a passive sealing silicon layer is formed on the glass layer for protecting the device from contamination.

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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 January 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 29, 1980
Term endedJanuary 29, 1997
Patent numberCA 1070853 A
Classification (IPC)H05K5/06 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 29, 1980Term endedJan 29, 1997

Sources & verification

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