Device for detecting in a binary signal a pointer consisting of a continuous sequence of binary elements having the same value

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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 June 26, 1990 and granted October 18, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2010.
• A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 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.