Apparatus for and method of taking a predeterminable volume of a sample of medium
CA 2279059 C · Owner: Schneider, Wilhelm · Inventors: Waldhauser, Dieter; Einsiedler, Helmut; Lebski, Hubert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The apparatus makes it possible to change a desired sample volume - even during operation - in a simple manner without mechanical intervention with any, accumulation solids of a sample contained in a sample collecting vessel being avoided, so that a sample representative of the medium is obtained. The apparatus comprises a control unit which controls a pneumatic control gear and switches a pump by means of which the medium is drawn into a sample collecting vessel via a hose or tube used as a suction line. A detection unit incorporated in the suction line signals the presence of the medium to the control unit which then, controls the time period for taking the desired volume of the sample. …
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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 29, 1999 and granted September 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2021.
- 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
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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.