Ge-ga-s-based glass composition having light amplifying characteristic and apparatus for optical communications using the same
CA 2252722 C · Owner: Park, Se-Ho · Inventors: Park, Se-Ho; Kim, Hyoun-Soo; Heo, Jong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Ge-Ga-S-based glass composition for performing an optical amplification and an apparatus for optical communications using the same are provided. In the glass composition according to the present invention an active, material for performing luminescence and optical amplification operations is added to the Ge-Ga-S host glass and a transition metal ion moving the distribution of optical amplification gains is added in a range from 0.07. moleo to 0.2 mol%.
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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 November 3, 1998 and granted November 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2020.
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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.