Weiyang
Weiyang Lin, Kwai Chung HK
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20120101054 | Novel Sodium Channel Blocking Compounds Tetrodotoxin Galactopyranosides - Novel sodium channel blocking compounds tetrodotoxm galactopyranosides of formula I were isolated and purified by HPLC and identified further through IR, NMR, GC, and MS. The compounds have a galactopyranosyl moiety attached to C11 of tetrodotoxin and retain the analgesic activity of the latter. Pharmaceutical compositions and medical uses thereof are further disclosed. | 04-26-2012 |
Weiyang Lin, Kwaichung HK
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20120264767 | STABLE PHARMACEUTICAL COMPOSITION OF FREEZE-DRIED TETRODOTOXIN POWDER - This invention relates to a stable pharmaceutical composition of freeze-dried tetrodotoxin powder which contains trace amount of tetrodotoxin, substances which can stabilizes tetrodotoxin, including disaccharide(s) or polyglucose(s) or analogues thereof and solvent(s), and solvents which can help tetrodotoxin dissolve. | 10-18-2012 |
Weiyang Wang, Shenzhen CN
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20120288278 | PASSIVE OPTICAL SPLITTER AND PASSIVE OPTICAL NETWORK SYSTEM - The present invention provides a passive optical splitter and a passive optical network system. The passive optical splitter includes at least two splitting single-mode waveguides, at least one combining single-mode waveguide, and at least one tapered waveguide, where one end of the tapered waveguide is coupled to the at least two splitting single-mode waveguides respectively, the other end of the tapered waveguide is coupled to the at least one combining single-mode waveguide, and a core layer of the tapered waveguide is made of a light-induced refractive index changeable material. When an optical signal is transmitted, light transmission is limited by increasing a refractive index difference between positions with different optical field intensity in the core layer, thus reducing a loss of optical signal leakage and improving uplink transmission efficiency. | 11-15-2012 |
Weiyang Xie, Dalian CN
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20130316007 | Microcapsule Preparation of Alginate-Chitosan Acyl Derviatives, Preparation and Application Thereof - The present invention relates to a microcapsule preparation product of alginate-chitosan acyl derivatives, which is produced by mixing microcapsules of alginate-chitosan acyl derivatives with an aqueous solution, wherein the biomicrocapsule structureconsists of two parts, a microcapsule membrane and an inner core; the microcapsule membrane is a polyelectrolyte composite hydrogel membrane formed by chitosan, alginates and chitosan acyl derivatives, and the inner core is an alginate liquid or a hydrogel environment containing cells. | 11-28-2013 |