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Expired Canadian patentCanada

Burn-in pads for tab interconnect structures

CA 1303752 C · Owner: Digital Equipment Corporation · Inventors: Chase, Richard A.

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

Abstract, A tape automated bonding tape segment carries on its top surface a printed circuit interconnect conductor high-density array having a plurality of signal, power and ground conductors. Burn-in testing pads are formed on either the top surface o. the bottom surface of the tape segment or both, and are connected to selected conductors. The testing pads are spaced apart and have a relatively low density to facilitate contact with test equipment, whereby a die connected to the printed circuit array can be tested.

Read the whole patent

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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 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.
FiledMarch 20, 1989
GrantedJune 16, 1992
Term endedJune 16, 2009
Patent numberCA 1303752 C
Classification (IPC)H01L23/50 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMarch 20, 1989Patent grantedJune 16, 1992Term endedJune 16, 2009

Sources & verification

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