Process for storing radioactive waste in the ground
CA 1207807 A · Owner: Pec Engineering · Inventors: Cohen, Pierre; Gouvenot, Daniel; Pagny, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a special injection grout for the storage in the ground of radioactive waste. This grout contains 1000 parts by weight of water, 40 to 400 parts by weight of cement 80 to 1000, parts by weight of at least one clay chosen from the group including montmorillonite, illite and vermiculite and 25 to 1200 parts by weight of kieselguhr and/or natural or artificial pozzuolanas. For the purpose of storing radioactive waste, the conditioned waste isolated by at least one retention barrier is placed in a cavity in the ground and then the grout is injected into gaps in that part of the ground area surrounding the cavity.
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
- Granted July 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 2003.
- 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.