Process for conditioning material for disposal
CA 2058740 C · Owner: Block, Randall Joseph · Inventors: Block, Randall Joseph; Milliken, John Duncan; Tyler, Randall Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Petroleum production, refining, and mining disposable deposits and sediments are, treated with an oxidizing agent such as chlorine dioxide and/or particle separation to, reduce the mass of disposable materials. The invention has particular application in, treating deposits and sediments which contain naturally occurring radioactive material, (NORM).
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 January 3, 1992 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 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.