Patents by Inventor Lizhi Zhao

Lizhi Zhao 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).

  • Publication number: 20240341066
    Abstract: An apparatus is described. The apparatus includes a shield enclosing a component attached to a circuit board and having an inner surface and outer surface, the component having an outer surface aligned in parallel with the shield inner surface of the shield, the shield including at least one opening extending through the shield from the outer surface to the inner surface and aligned with the component. The apparatus includes a heatsink positioned adjacent to the outer surface of the shield and aligned with the component, the heatsink thermally coupled to the outer surface of the component using flowable thermally conductive material that extends through the opening(s) and occupies a space between the outer surface of the component and the shield inner surface and a space between the shield outer surface and a surface of the heatsink. The apparatus may be assembled and used as part of an electronic device.
    Type: Application
    Filed: August 30, 2021
    Publication date: October 10, 2024
    Inventors: Lizhi ZHAO, Ming LI
  • Patent number: 11878989
    Abstract: A method for preparing an L-erythrobiopterin compound is provided. The L-erythrobiopterin compound has a structure represented by formula (I), and is mainly prepared from a compound having a structure represented by formula (II) or (III) through dihydroxylation. The preparation method of the L-erythrobiopterin compound is high in production efficiency, low in cost, environmentally friendly, and suitable for industrial production.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: January 23, 2024
    Assignee: SHANGHAI FOREFRONT PHARMA CO., LTD.
    Inventors: Bin Rong, Lizhi Zhao, Wei Li, Yi Ren, Lingui Zhu
  • Publication number: 20220298178
    Abstract: A method for preparing an L-erythrobiopterin compound is provided. The L-erythrobiopterin compound has a structure represented by formula (I), and is mainly prepared from a compound having a structure represented by formula (II) or (III) through dihydroxylation. The preparation method of the L-erythrobiopterin compound is high in production efficiency, low in cost, environmentally friendly, and suitable for industrial production.
    Type: Application
    Filed: August 18, 2020
    Publication date: September 22, 2022
    Inventors: Bin RONG, Lizhi ZHAO, Wei LI, Yi REN
  • Publication number: 20190081388
    Abstract: The invention relates to an antenna system mounted onto a printed circuit board, said antenna system comprising first and second radiating elements, an antenna feeding element connected to an antenna feeding pad of the printed circuit board, a ground return element connected to a ground pad of the printed circuit board. A third radiating element having first and second ends, the first end of the third radiating element is connected to the second end of the second radiating element. The third radiating element, the second radiating element, the ground return element and the antenna feeding element are arranged to form an inverted-F antenna.
    Type: Application
    Filed: March 21, 2017
    Publication date: March 14, 2019
    Inventors: Dominique LO HINE TONG, Philippe MINARD, Lizhi ZHAO
  • Publication number: 20180175505
    Abstract: An antenna for use in a wireless system is described. The antenna includes a radiating element, at least one signal input portion and at least one signal output portion. The at least one signal input portion and the at least one signal output portion are both coupled to the radiating element. A portion of the radiating element is positioned outward from and parallel to an edge of the printed circuit board when the radio frequency antenna is attached to a surface of the printed circuit board of the wireless system.
    Type: Application
    Filed: December 17, 2017
    Publication date: June 21, 2018
    Inventors: Lizhi ZHAO, Dominique LO HINE TONG, Philippe MINARD, Anthony AUBIN
  • Patent number: 7355080
    Abstract: A new method of preparing memantine hydrochloride, comprising the following steps: reacting 1-bromo-3,5-dimethyl adamantane and urea/formic acid, with formic acid also acting as the solvent; hydrolyzing with aqueous inorganic acid; alkalifying, extracting and acidifying with hydrochloric acid; finally collecting target compound. The method uses inexpensive raw materials and is performed in homogeneous phase under mild conditions. It can achieve high yield and good product purity, and is suitable for macrochemistry. The purity of crude product is 99.0%, and reaches 99.98% after first recrystallization, yield: 69.5%, mp: 332 C (DSC).
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: April 8, 2008
    Assignees: Shanghai Institute of Pharmaceutical Industry, Zhejiang Kangyu Pharmaceutical Co., Ltd.
    Inventors: Fuli Zhang, Meng Hu, Lizhi Zhao, Mengya Ge
  • Publication number: 20070078283
    Abstract: A novel method of preparing memantine hydrochloride, comprising the following steps: reacting 1-bromo-3,5-dimethyl adamantane and urea/formic acid, with formic acid also acting as the solvent; hydrolyzing with aqueous inorganic acid; alkalifying, extracting and acidifying with hydrochloric acid; finally collecting target compound. The method uses inexpensive raw materials and is performed in homogeneous phase under mild conditions. It can achieve high yield and good product purity, and is suitable for macrochemistry. The purity of crude product is 99.0%, and reaches 99.98% after first recrystallization, yield: 69.5%, mp: 332 C (DSC).
    Type: Application
    Filed: December 19, 2003
    Publication date: April 5, 2007
    Inventors: Fuli Zhang, Meng Hu, Lizhi Zhao, Mengya Ge