Tool for semiconductor chip removal
CA 2015757 C · Owner: Thomas & Betts Corporation · Inventors: Eggers, Arthur; Blake, Kenneth E.; Schwab, Ronald W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus is provided for effecting removal of a semiconductive chip having an exteriorly-accessible surface and chip contacts depending therefrom from a chip carrier having an exteriorly-accessible surface and chip carrier contacts therein in retentive engagement with the chip contacts and with the chip carrier contacts being secured in a printed circuit board. The apparatus comprises a tool having mutually displaceable removal members adapted in a first tool state to bear respectively against an exteriorly-accessible surface of the chip and against an exteriorly-accessible surface of the chip carrier, neither of such removal members engaging the printed circuit board in such first state. …
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 April 30, 1990 and granted December 14, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2012.
- 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.