Method and system for supervision
CA 2119352 C · Owner: Eriksson, Lennart · Inventors: Eriksson, Lennart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A monitoring method, such as a time and/or passage monitoring method, in which individuals such as physical, persons, make contact with a stamping unit and therewith supply information to the unit, in which the information is preferably compiled. The method is mainly characterized by arranging existing units in a decentralized system in which each unit is separated physically from remaining units; and is further characterized in that each individual himself carries an updated information carrier which includes unique information personal to the individual concerned wherein, updating of the information carrier can be effected upon contact with a stamping unit. The invention also relates to a …
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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 September 18, 1992 and granted May 7, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 2014.
- 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.