Radial type of parallel system bus structure
CA 2014571 C · Owner: Takashima, Tokuhei · Inventors: Takashima, Tokuhei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an improved parallel system bus structure comprising a plurality of bus wire-printed disks each having a plurality of signal conductors of equal length extending radially from a common central contact. These bus disks are spaced vertically at regular intervals and a plurality of, connectors are fixed to the circumferences of the bus disks to permit connection between the signal conductors of the bus disks and the terminals of the CPU board. The radial arrangement of signal conductors permits connection of selected CPU boards via equal length of signal path no, matter how many CPU boards may be used. Therefore no timed, control is required in transmission of signals between …
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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 April 12, 1990 and granted June 9, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 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.