Biocompatible glass
CA 2042349 C · Owner: Schott Glaswerke · Inventors: Ditz, Hermann; Paschke, Hartmut; Gaschler, Ludwig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biocompatible glass which can be melted using infrared radiation is described which contains based on oxide, 65-68% by weight of SiO2 0 - 3% by weight of Li2O, 12 - 14% by, weight of Na2O 2.5 - 4% by weight of K2O, 15 - 17% by weight of .SIGMA. alkali metal oxides, 2 - 3% by weight of MgO 4.2 - 5.5% by, weight of CaO, 0 - 2% by weight of BaO 3 - 4% by weight of, Al2O3, 0 - 1% by weight of B2O3 and 2.7 - 4.1% of FeO. The glass due to its infra-red meltability and its physiological acceptability, is suitable for the encapsulation of sensitive materials, such as transponders or minitransmitters which are, implanted in a living body, or as ampoule glass for meltencapsulation of sensitive …
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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 10, 1991 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2013.
- 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.