Glass yarn for reinforcing organic and/ or inorganic materials
CA 2559931 C · Owner: Creux, Sophie · Inventors: Berthereau, Anne; Creux, Sophie; Lecomte, Emmanuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to reinforcing glass yarns whose composition comprises the following components within the limits defined thereafter in percentages by weight: SiO¿2? 59 - 63 % AL¿2?O¿3? 10 - 16 %, CaO 16 - 23 %, MgO 1 3.2 % Na¿2?O + K¿2?O + Li¿2?O 0 - 2 %, TiO¿2? 0 - 1 % B¿2?O¿3? 0.1 - 1,8 %, Li¿2?O 0 0.5 %, ZnO 0 0.4 % MnO 0 - 1 %, F 0 0.5 %. The inventive yarns exhibit improved mechanical acid and high-temperature resistance for the low cost composition thereof. A method and a composition for producing said yarns are also disclosed.
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 March 14, 2005 and granted July 30, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 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.