Method for doping metallic connecting wire
CA 2278020 A1 · Owner: Nuno, Rosa Lynda · Inventors: Pham, Cuong Van; Baker, Jay Deavis; Nuno, Rosa Lynda
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed for on-line doping of metallic connecting wire for use in integrated circuits. The method comprises the steps of: providing a bonding apparatus (70) comprising a bonding tool (40) said bonding tool having a tip , (44) through which a capillary (42) runs such that metallic connecting wire , (20) may be fed through said tip (44); extending an end of the connecting wire (20) a predetermined length beyond the tip (44) of said bonding tool (40); and forming a doped area on the end of said wire by: bringing the end of said wire into contact with dopant material (52) and applying predetermined amounts of pressure, heat, and ultrasonic vibration to said end of the wire …
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
- Filed December 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2019.
- 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.