Patents by Inventor Yu-Kai Li

Yu-Kai Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Crystals of morphinan derivative, manufacturing method thereof, and pharmaceutical composition using the same
    Patent number: 8816084
    Abstract: The present invention relates to a X-form crystal of 17-cyclopropylmethyl-3,14?-dihydroxy-4,5?-epoxy-6?-[N-methyl-trans-3-(3-furyl)acrylamido]morphinan hydrochloride and the manufacturing method thereof, wherein the X-form crystal of the compound has characteristic diffraction peaks at positions of 2? of 13.6°(±0.2°), 17.2°(±0.2°), 19.1°(±0.2°), 23.2°(±0.2°), and 23.8°(±0.2°) in a powder X-ray diffraction pattern thereof. The present invention also relates to a pharmaceutical composition comprising the above-mentioned X-form crystal of morphinan derivative hydrochloride.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: August 26, 2014
    Assignee: Everlight Chemical Industrial Corporation
    Inventors: Yuan-Yi Wang, Yu-Kai Li, Yu-Ting Su, Chia-Chen Hung, Chi-Hsiang Yao