Element for sealing and monitoring a body, in particular a refuse dump
CA 2106582 C · Owner: Siemens Aktiengesellschaft · Inventors: Gunther, Klaus; Jax, Peter; Ruthrof, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an element for sealing and monitoring a body (1). Provision is made for two seals (4, 5) to be spaced apart by supporting elements (6), while at least one channel (7) remains free between the supporting elements 16). At the outlet openings of said channel one or more sensors (18) is or are disposed. The seals (4 5) are connected to each other at their edges. The supporting elements (6) consist of a material which is permeable but resistant to flow preferably a, material whose flow resistance perpendicular to the channel (7) is less than that parallel to the channel (7). The position of a leak (29) can be determined with the aid of two sensors (18), which in a refuse …
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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 19, 1992 and granted October 20, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 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.