Artificial mineral wool composition
CA 2248941 A1 · Owner: Bernard, Jean-Luc · Inventors: Lafon, Fabrice; Garcia-Lopez, Enrique; Furtak, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a mineral wool composition capable of dissolving in a physiological medium comprising the constituents listed below in the following weight proportions: CaO + MgO + BaO + Na¿2?O + K¿2?O + B¿2?O¿3? - 2 x Al¿2?O¿3? > 30 % RO 13.5 to 19.5 %, R¿2?O 14.2 to 23 %, RO/R¿2?O 0.70 to 0.95 % CaO/MgO > 1.5 %, SiO¿2? 47 to 58.5 %, Al¿2?O¿3 ?0 to 3.5 % B¿2?O¿3? 5 to 10 %, Fe¿2?O¿3? (total iron ) 0 to 3 % with RO: the oxides of elements of column 2a of the periodic table including CaO, MgO, BaO and SrO, R¿2?O: the oxides of column 1a of the periodic table including Na¿2?O, K¿2?O, Li¿2?O.
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 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2020.
- 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.