Application of deuterium oxide in producing silicon containing and metal containing materials
CA 2345939 A1 · Owner: Zenastra Photonics Inc. · Inventors: Zhou, Ming; Zhang, Pingqing; Pan, Guang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Deuterium oxide, D2O, also called heavy water is used for the hydrolysis of , silanes and metal compounds. The D2O-hydrolyzed silanes polycondense much easier than H2Ohydrolyzed, silanes, resulting in a fast Si-O-Si network build up. The most important feature of using D2O is, that the final materials are 100% free of O-H and the residual O-D bond does not have an, absorption peak in the wavelength range of 1.0 to 1.8 µm which is crucial , in reducing optical loss at the wavelengths of 1.3 and especially 1.55 µm. O-H free sol-gel materials with low, optical loss have been developed based on this process. D2O may be applied in all kinds of, hydrolysis-processes, such as the sol-gel …
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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 3, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2023.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.