Read-only sequence controller
CA 2102844 C · Owner: Kuze, Yoshikazu · Inventors: Kuze, Yoshikazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A read-only sequence controller has a main circuit and a sub-circuit operated by a command signal from the main circuit at a predetermined cycle time. The cycle time of the main circuit is longer than the sub-circuit in order to control the sub-circuit. A sensor is provided on an outlet of a machine for detecting a discharge of a work at every cycle end and producing a discharge signal which is fed to the sub-circuit. In normal operation, the sub-circuit is re-started in response to the discharge signal and the command signal from the main circuit. When abnormality occurs the, sensor does not produce the discharge signal. In response to absence of the discharge signal and to the command …
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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 November 10, 1993 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2015.
- 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.