Cementing compositions and use of such compositions for cementing oil wells or the like
CA 2331215 A1 · Owner: Baret, Jean-Francois · Inventors: Baret, Jean-Francois; Dargaud, Bernard; Le Roy-Delage, Sylvaine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides cementing compositions for oil wells or the like and including reinforcing fibers of amorphous cast metal. Compositions of the invention have mechanical properties that are improved particularly from , the point of view of tensile strength and they are particularly suitable for cementing zones that are subjected to extreme dynamic stresses such as , perforation zones and branch well junctions.
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 4, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 4, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2021.
- 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.