Fils de verre aptes a renforcer des matieres organiques et/ou inorganiques
CA 2591026 C · Owner: Owens Corning Holdings 5 C.V. · Inventors: Lecomte, Emmanuel; Berthereau, Anne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns reinforcing glass yarns whereof the composition includes the following constituents as defined below expressed in wt. %: 50 65 % SiO2; 12 20 % Al2O3; 12 17 % CaO; 6 12 % MgO; <= 2 preferably <= 3CaO/MgO; 0.1 0.8 %, preferably <= 0.6 Li2O; 03 % BaO+SrO; 0 3 % B2O3; 0 3 % TiO2; < 2 % Na2O+K2O; 0 1 % F2; < 1 % Fe2O3. Said yarns consist of a glass providing an excellent compromise between its mechanical properties represented by the specific Young modulus and melting and fiber drawing conditions.
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 December 15, 2005 and granted January 13, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.