Process and device for decontaminating surfaces contaminated with radioactivity
CA 2084503 C · Owner: Friedrich, Irene · Inventors: Friedrich, Irene; Seeberger, Erich; Operschall, Hermann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
When cleaning contaminated surfaces of components of nuclear plant, it is important to avoid the release of radioactive aerosols into the atmosphere and to limit the amount of radioactive waste arising. The invention therefore proposes a mechanical process, using a blast-cleaning agent (4) in which, the area (2) to be decontaminated is surrounded during treatment, with the jet, by a dust-tight enclosure (10) and a closed-circuit jet unit (70) is used to recycle the blast-cleaning agent. In addition, the invention includes a device for carrying out the dry decontamination process. In a preferred embodiment this, device includes a manipulator with a jet-nozzle mounted so that it can move on 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 May 29, 1991 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 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
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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.