Printed circuit board including crosstalk compensation
CA 2225129 C · Owner: Lucent Technologies Inc. · Inventors: Hashim, Amid Ihsan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a device for reducing crosstalk in an electrical connector. The device includes an insulating board with a plurality of layers. A first plurality of pairs of conductive paths is formed on a surface of at least one layer and a second, plurality of pairs of conductive paths is vertically spaced therefrom. The paths are arranged so that at least one conductive path in the first plurality of pairs overlies at least two conductive paths from different pairs in the second plurality of pairs. The capacitive coupling between the paths results in crosstalk having a polarity opposite to that of the connector so as to compensate for the connector crosstalk.
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 17, 1997 and granted September 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 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.