Multiplexing/demultiplexing unit arranged on a multi-surface integrated circuit
CA 2173947 C · Owner: Buhrgard, Karl Sven Magnus · Inventors: Jiang, Hao; Buhrgard, Karl Sven Magnus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a, multiplexing/demultiplexing unit constructed as an integrated circuit and as a block on a sub-surface of a silicon surface such as a digital Bi-CMOS circuit and utilizing a CMOS section laid on said circuit, wherein a first sub-surface of a silicon surface carries a first array of signal input and output circuits, and a second sub-surface carries a second array of input and output circuits. A region is located on the silicon surface between the first and the second subsurfaces or located in some corresponding manner and is intended to carry control logic, memory stores buffer, circuits, synchronizing circuit arrangement and the requisite conductors and …
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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 October 3, 1994 and granted September 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2016.
- 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.