Patents by Inventor Linping XU

Linping 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: 20250214847
    Abstract: A process for forming a porous spherical silica material is provided. The process comprises mixing an alkali silicate with a mineral acid at pH and temperature sufficient to form a silica sol, mixing the silica sol with an oil and a surfactant to form a water-in-oil type emulsion, adding an alkaline solution to the emulsion to form a gel, adding a demulsifying agent and heating to a temperature of from about 60°° C. to about 90° C., and filtering, washing, optionally aging, and drying to obtain the porous spherical silica gel particles.
    Type: Application
    Filed: March 15, 2023
    Publication date: July 3, 2025
    Inventors: Linping Xu, Dave Chapman, Li Zhang, Michael Baptiste, Jr., Jamin L. Krinsky, John H. Hain, Jr.
  • Publication number: 20250205686
    Abstract: Olefin catalyst systems comprising silica supports are provided. For example, in one embodiment, the olefin polymerization catalyst system comprises a silica support, a catalyst precursor compound, and an activator. The silica support comprises a plurality of silica gel particles. Each particle comprises a rigid network of amorphous silica. The particles are spherical, single gel particles that have an average aspect ratio of about 1.2 or less, an average pore volume of from about 1.4 ml/g to about 3 ml/g, an average surface area from about 200 m2/g to about 950 m2/g, and a median particle size from about 4 ?m to about 100 ?m.
    Type: Application
    Filed: March 14, 2023
    Publication date: June 26, 2025
    Inventors: Li Zhang, Jamin L. Krinsky, Michael Baptiste, John H. Hain, Jr., Rose Kent, Andrew Singleton, Dave Chapman, Linping Xu
  • Publication number: 20210342502
    Abstract: A multiple objective optimization route selection method based on a step ring grid network for a power transmission line is configured to use multiple data for regional classification and to select virtual topological nodes to construct a virtual topology map. An overall route is planed according to the shortest and optimization route selection method. After selecting the virtual topology route, a semi annular domain of a step ring grid map is constructed through the connections of the topological nodes. After the segmentation of the semi-annular domain to form a plurality of grids, the grids are numbered. The grid attributes of the grids are used for optimizing the route. The multiple objective optimization function is constructed according to a distance function, a cost objective function and an angle cornering objective function, in order to collaboratively optimize the transmission line route.
    Type: Application
    Filed: September 25, 2019
    Publication date: November 4, 2021
    Inventors: Jian FENG, Chunyang YU, Senxiang LU, Chengze REN, Dazhong MA, Yunbo LI, Linping XU