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Expired Canadian patentCanada

Data storage element having input and output ports isolated from regenerative circuit

CA 1235504 A · Owner: Tektronix, Inc. · Inventors: Whiteley, Stephen R.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

9-, Abstract of the Disclosure, A data storage element having input and output ports isolated from a regenerative latch portion so that the data transmission path is not through the latch. The circuit arrangement provided greatly reduces the probability of a metastable occurrence and permits data acquisition at a high rate with minimal error, and thus is suitable for use in high-speed digital shift registers.

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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

  • Granted April 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 26, 1985
GrantedApril 19, 1988
Term endedApril 19, 2005
Patent numberCA 1235504 A
Classification (IPC)H03K3/03 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedFeb 26, 1985Patent grantedApril 19, 1988Term endedApril 19, 2005

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.