Electrically conductive feedthrough connection and methods of manufacturing same
CA 2028113 C · Owner: Endress U. Hauser Gmbh U. Co. · Inventors: Klahn, Thomas; Hegner, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mechanically heavily loadable and high-vacuum-tight feedthrough connection through a hole (2) of a high-temperature-resistant and vacuum-proof insulating part (1), particularly of ceramic, glass, or a single crystal is disclosed which can be produced in a single high-temperature step and is thus inexpensive. It is designed as a terminal lead (4) covered with active solder and soldered into the hole, the terminal lead having a coefficient of thermal expansion less than that of the insulating part (1). The feedthrough connection is preferably used in a capacitive pressure sensor (10) having a diaphragm (11) and a substrate (12) which nave-spaced-apart, flat inner surfaces which are provided …
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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 March 15, 1990 and granted December 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2012.
- 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.