Making contact with semiconductor chips in chip cards
CA 2453156 A1 · Owner: Pueschner, Frank · Inventors: Heinemann, Erik; Pueschner, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a chip card comprising a chip card base (1) a , semiconductor chip (3) and a carrier substrate (2). The carrier substrate (2) is provided on both sides (11, 12) with planar contacts (4 5) and , thereinbetween with contact holes (6) so-called vias, that electrically , interlink the upper and the lower planar contacts. Since the interior of the contact holes (6) is hollow, humidity can penetrate the cavities into the interior (20) of the chip card and damage the semiconductor chip if the contact holes (6) are not covered. Covered contact holes (6) however, are , expensive to produce. The aim of the invention is therefore to provide chip cards in which humidity is …
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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 August 9, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 9, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.