Patents by Inventor Huifang Xu

Huifang Xu 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: 20220314256
    Abstract: A spraying robot, a control method, and a computer readable storage medium are disclosed. The spraying robot includes a frame body, a first lifting mechanism, a lifting motor, and a spraying gun; a lifting channel is provided inside the frame body; the first lifting mechanism is provided inside the lifting channel; a first portion of the first lifting mechanism is fixedly connected to the frame body; the lifting motor is connected to the first lifting mechanism in a transmission manner, so that under the driving of the lifting motor, the first lifting mechanism moves in the lifting channel; the spraying gun is provided in a second portion of the first lifting mechanism; wherein the first portion and the second portion are provided on both sides of the first lifting mechanism.
    Type: Application
    Filed: April 26, 2020
    Publication date: October 6, 2022
    Inventors: Anpeng XU, Huifang XU, Ruinan JI, Lue LI
  • Publication number: 20210292733
    Abstract: The present invention relates to biocatalysts catalyzing the formation of ?-olefins. In particular, the invention provides polypeptides with improved decarboxylase activity on C10-C16 free fatty acids, more particularly on C10 or C12 free fatty acids, as compared to the P450 fatty acid decarboxylase isolated from the Staphylococcus massiliensis strain S46 (Sm46). The invention further provides recombinant nucleic acids and vectors comprising the coding sequences encoding these polypeptides, genetically engineered host cells expressing said polypeptides and methods for the production of C9-C15 ?-olefins, more particularly C9 or C11 ?-olefins, using said polypeptides or said host cells.
    Type: Application
    Filed: July 25, 2019
    Publication date: September 23, 2021
    Applicants: TOTAL RAFFINAGE CHIMIE, QINGDAO INSTITUTE OF BIOENERGY AND BIOPROCESS TECHNOLOGY (QIBEBT)
    Inventors: Shengying LI, Huifang XU, Linlin NING, Laurent FOURAGE
  • Patent number: 10407638
    Abstract: The present invention relates to the biosynthesis of ?-olefins. In particular, the invention provides methods for the production of medium-chain ?-olefins, more particularly C11 ?-olefins, using a polypeptide with decarboxylase activity on free fatty acids with 8 to 14 carbons, in particular on C8-C12 free fatty acids, more particularly on C12 free fatty acids, or a genetically engineered host cell expressing or overexpressing said polypeptide.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: September 10, 2019
    Assignees: Total Raffinage Chimie, Qingdao Institute of Bioenergy and Bioprocess Technology
    Inventors: Laurent Fourage, Frédéric Laeuffer, Henri Strub, Yun Wang, Jian Xu, Huifang Xu, Shengying Li
  • Patent number: 8454817
    Abstract: A mechanism of initiating a redox reaction, such as hydrogen gas production by direct-water-splitting, is provided in which a piezoelectric material is mechanically stressed by actively applying a mechanical stress to the material. The mechanical stress applied to the piezoelectric material causes an electrical potential build up on the surface of the material due to the piezoelectric properties of the material. When the piezoelectric material stressed in this manner is placed in direct contact with the redox reaction reactant(s), the potential on the polarized surface can be used as chemical driving energy to initiate the reaction, such as to split water and generate hydrogen gas. In this manner the mechanical energy applied to the piezoelectric material, such as vibration energy from natural or man-made sources, can be converted directly into chemical energy to initiate the reaction.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: June 4, 2013
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Huifang Xu, Kuang-Sheng Hong, Xiaochun Li
  • Publication number: 20100012479
    Abstract: A mechanism of initiating a redox reaction, such as hydrogen gas production by direct-water-splitting, is provided in which a piezoelectric material is mechanically stressed by actively applying a mechanical stress to the material. The mechanical stress applied to the piezoelectric material causes an electrical potential build up on the surface of the material due to the piezoelectric properties of the material. When the piezoelectric material stressed in this manner is placed in direct contact with the redox reaction reactant(s), the potential on the polarized surface can be used as chemical driving energy to initiate the reaction, such as to split water and generate hydrogen gas. In this manner the mechanical energy applied to the piezoelectric material, such as vibration energy from natural or man-made sources, can be converted directly into chemical energy to initiate the reaction.
    Type: Application
    Filed: July 14, 2009
    Publication date: January 21, 2010
    Inventors: Huifang Xu, Kuang-Sheng Hong, Xiaochun Li
  • Publication number: 20080223713
    Abstract: The present invention involves increasing the quantum efficiency in titania photocatalysts for photocatalytic (oxidation of acetaldehyde) and photosynthetic (photosplitting of water) reactions by integrating the titania photocatalyst with a polar mineral having surface electrical fields due to pyroelectric and piezoelectric effects, and by adjusting the nanostructure of the photocatalyst materials. The photocatalytic reactivity of titania powder is increased due to the effect of electric field present on the surface of polar mineral material on the photocatalytic effect of commercial titania with respect to photolysis of water. Additionally, the photocatalytic performance of pure phase rutile and anatase nanostructures with well defined morphologies was found to improved with respect to certain photocatalytic reactions in comparison with non-structured titania.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Inventors: Huifang Xu, Rakesh Reddy Yeredla, Kuang-sheng Hong