Sampler safety interlock device
CA 2046103 C · Owner: Hunszinger, Peter A. · Inventors: Krause, Marcel J.; Hunszinger, Peter A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flow sampler device which can be employed in a catalytic reactor system comprises a sample receiver and an inlet and outlet valve which are each in fluid communication with the receiver. Each of the valves includes a valve stem which is rotatable about a longitudinal axis thereof so as to actuate the respective valve and has a collar element secured thereto. This collar element has a first end and a second end and comprises a wall means which defines a longitudinal passageway therethrough. The collar element also includes a locking slot which is defined therein and which includes a first portion extending from the first end of the element and a second portion which is substantially …
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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 July 3, 1991 and granted December 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2013.
- 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.