Patents by Inventor QICHUAN LI

QICHUAN 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).

  • Publication number: 20210147350
    Abstract: Provided by the present disclosure are a method and a device for preparing 2-hydroxy-4-methylthiobutyric acid and intermediates thereof; the intermediates for preparing 2-hydroxy-4-methylthiobutyric acid comprise 3-methylthiopropionaldehyde and 2-hydroxy-4-methylthiobutyronitrile.
    Type: Application
    Filed: August 27, 2019
    Publication date: May 20, 2021
    Applicants: ZHEJIANG NHU COMPANY LTD., ZHEJIANG UNIVERSITY, SHANDONG NHU AMINO ACID CO., LTD.
    Inventors: Zhirong Chen, Hong Yin, Baishan Hu, Zhengjiang Wang, Zhixuan Wang, Cong Chen, Guisheng Qiu, Qichuan Li, Qingai Shi
  • Patent number: 10974225
    Abstract: The present disclosure belongs to the technical field of catalysis, and particularly relates to a metal oxide coated ceramic corrugated plate catalyst, its preparation method and application thereof in preparation of key intermediates of citral. The catalyst consists of a ceramic corrugated plate carrier and a metal oxide active layer coated on a surface of the carrier, wherein the metal oxide active layer is a metal oxide formed by active ingredient titanium and at least four other metal elements selected from vanadium, chromium, manganese, iron, zirconium, niobium and molybdenum.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: April 13, 2021
    Assignees: ZHEJIANG NHU COMPANY LTD., ZHEJIANG UNIVERSITY, SHANDONG NHU PHARMACEUTICAL CO., LTD.
    Inventors: Haoran Li, Xiao Ma, Yong Wang, Baishan Hu, Dan Qiu, Jianyong Mao, Bing Lu, Shanjun Mao, Lili Yu, Qichuan Li
  • Publication number: 20210009514
    Abstract: The present disclosure discloses a preparation method for 4-phenylthio-benzenethiol. The preparation method comprises the following steps: subjecting phenyl sulfide as a raw material to a halogenation reaction to obtain 4-halophenyl sulfide; subjecting the 4-halophenyl sulfide to a sulfhydrylation reaction to obtain a 4-phenylthio-phenylthiolate; and subjecting the 4-phenylthio-phenylthiolate to acidification. The preparation method of the present disclosure avoids the use of materials such as thiophenol which pollutes the environment, and realizes efficient recycling of the reaction materials, solvents, water and the like. The preparation method of the present disclosure is a green process for the synthesis of 4-phenylthio-phenylthiol without organic waste, waste acid and waste water discharge.
    Type: Application
    Filed: July 12, 2018
    Publication date: January 14, 2021
    Applicants: Zhejiang NHU Company Ltd, Zhejiang University, Zhejiang NHU Special Materials Co., Ltd.
    Inventors: Zhirong CHEN, Woyuan LI, Hong YIN, GuĂ­yang ZHOU, Haoran LI, Shuaifeng PAN, Ming LIAN, Guangde QIN, Qichuan LI
  • Publication number: 20200399667
    Abstract: The present application relates to a method for extracting coenzyme Q10 and a phospholipid from a coenzyme Q10 fermentation bacterium powder. The method is characterized in that the fermentation bacterium powder of a coenzyme Q10 production strain is subjected to extraction with a mixed solvent of which the three-dimensional Hansen solubility parameter is between 21 and 23 (J/cm3)1/2 and the hydrogen bonding solubility parameter thereof is between 10 and 12 (J/cm3)1/2. The present invention can efficiently extract two products, namely coenzyme Q10 and a phospholipid, from the coenzyme Q10 fermentation bacterium powder; the process thereof is highly operable, easy to be industrialized, and can provide a product with high purity and yield, having great economic benefit.
    Type: Application
    Filed: May 23, 2018
    Publication date: December 24, 2020
    Inventors: Shenfeng YUAN, Yang YOA, Yi MIN, Baishan HU, Zhaofeng CHEN, Yong LI, Qichuan LI, Yunxuan LUO, Jinyang ZHANG, Xuguang LI, Shichun TU
  • Publication number: 20200347186
    Abstract: The present application relates to a method for extracting coenzyme Q10 and a phospholipid from a coenzyme Q10 fermentation bacterium powder. The method is characterized in that the fermentation bacterium powder of a coenzyme Q10 production strain is subjected to extraction with a mixed solvent of which the three-dimensional Hansen solubility parameter is between 21 and 23 (J/cm3)1/2 and the hydrogen bonding solubility parameter thereof is between 10 and 12 (J/cm3)1/2. The present invention can efficiently extract two products, namely coenzyme Q10 and a phospholipid, from the coenzyme Q10 fermentation bacterium powder; the process thereof is highly operable, easy to be industrialized, and can provide a product with high purity and yield, having great economic benefit.
    Type: Application
    Filed: July 12, 2018
    Publication date: November 5, 2020
    Inventors: Woyuan LI, Hong YIN, Zhirong CHEN, Baishan HU, Guiyang ZHOU, Hangjun DENG, Ming LIAN, Xiongwei ZHANG, Qichuan LI, Jiang ZHAO
  • Publication number: 20200029596
    Abstract: The present invention discloses a fat-soluble nutrient microcapsule and a preparation method thereof. The fat-soluble nutrient microcapsule comprises the following components in percentage by weight: a fat-soluble nutrient (0.2-51.6%), an antioxidant (0.2-5.0%), a wall material (41.4-97.6%) and a moisture (2.0-5.0%) and the ratio of the fat-soluble nutrient that keeps active in the fat-soluble nutrient microcapsule to the fat-soluble nutrient that is initially added is 0.990-0.997:1. The preparation method of the fat-soluble nutrient microcapsule comprises an emulsification process and a granulation process, wherein the emulsification is performed in a cavitation emulsifier. By the preparation method, the nutrient active substance of the fat-soluble nutrient microcapsule has less lost and high stability.
    Type: Application
    Filed: April 26, 2018
    Publication date: January 30, 2020
    Inventors: JIANDONG LI, BAISHAN HU, ZHIRONG CHEN, LIFANG SHI, QICHUAN LI, XIAOYONG ZHU, GUISHENG QIU, QILEI ZHANG, YOUMIN YANG, LINPU CAI