Method for reuse of contaminated concrete
CA 2205947 A1 · Owner: The Babcock & Wilcox Company · Inventors: Kingsley, Richard Seymour; Pietsch, Charles Paul; Marks, Timothy Carter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for minimizing waste volumes from the demolition of radiologically and/or chemically contaminated concrete facilities by using engineering techniques to separate contaminated from uncontaminated fractions and/or by reusing the contaminated concrete for manufacture of waste storage or disposal containers. Explosive demolition is used to either selectively remove contaminated surface layers of concrete from underlying uncontaminated concrete (where the contamination is confined to the surface layers), or, where the contamination is throughout the concrete, to reduce contaminated concrete into pieces of an appropriate size for use as manufacturing aggregate. The balance of the …
Read the whole patent
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 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2019.
- 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.