Patents by Inventor Kai-Wei Cheng

Kai-Wei Cheng 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: 20240234946
    Abstract: A high thermal-stability separator and method for manufacturing thereof are disclosed. The high thermal-stability separator comprises a porous film and a titanium oxide or/and titanium hydroxide film, wherein the porous film comprises a porous substrate and a inorganic layer, wherein the inorganic layer comprises a plurality of inorganic particles and a binder, the inorganic layer is formed on at least one surface of the porous substrate, and the porous substrate and the inorganic layer have a plurality of interconnected porous structures; and the titanium oxide or/and titanium hydroxide film is formed on the surface and the inner walls of porous structures of the porous film. The present high thermal-stability separator can provide enhanced compression retention and excellent high temperature melt integrity, and maintain a satisfied air permeability (Gurley) after compression.
    Type: Application
    Filed: September 28, 2023
    Publication date: July 11, 2024
    Applicant: BenQ Materials Corporation
    Inventors: WEI-TING YEH, WAN-TING LO, YI-TING LO, KAI-WEI CHENG, YI-FANG HUANG
  • Patent number: 11616273
    Abstract: The disclosure provides a method for manufacturing a separator, comprising the steps of: providing a nonporous precursor substrate; coating a heat-resistant slurry on a surface of the nonporous precursor substrate to form a heat-resistant coating layer, wherein the heat-resistant slurry comprises a binder and a plurality of inorganic particles; and stretching the nonporous precursor substrate with the heat-resistant coating layer formed thereon to generate a separator comprising a porous substrate and a heat-resistant layer; wherein the heat-resistant layer is disposed on the surface of the porous substrate in the range of 10% to 90% of the total surface area of the porous substrate.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: March 28, 2023
    Assignee: BenQ Materials Corporation
    Inventors: Wei-Ting Yeh, Yi-Fang Huang, Kai-Wei Cheng, Yu-Ruei Li, Wan-Ting Lo
  • Patent number: 11575180
    Abstract: The disclosure provides a separator comprising a porous substrate and a heat-resistant layer disposed on a surface of the substrate. The heat-resistant layer comprises a binder and a plurality of inorganic particles, wherein the heat-resistant layer is disposed on the surface of the porous substrate in the range of 10% to 90% of the total surface area of the porous substrate.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: February 7, 2023
    Assignee: BenQ Materials Corporation
    Inventors: Wei-Ting Yeh, Yi-Fang Huang, Kai-Wei Cheng, Yu-Ruei Li, Wan-Ting Lo
  • Publication number: 20220216571
    Abstract: The disclosure provides a method for manufacturing a separator, comprising the steps of: providing a nonporous precursor substrate; coating a heat-resistant slurry on a surface of the nonporous precursor substrate to form a heat-resistant coating layer, wherein the heat-resistant slurry comprises a binder and a plurality of inorganic particles; and stretching the nonporous precursor substrate with the heat-resistant coating layer formed thereon to generate a separator comprising a porous substrate and a heat-resistant layer; wherein the heat-resistant layer is disposed on the surface of the porous substrate in the range of 10% to 90% of the total surface area of the porous substrate.
    Type: Application
    Filed: March 25, 2022
    Publication date: July 7, 2022
    Applicant: BenQ Materials Corporation
    Inventors: WEI-TING YEH, YI-FANG HUANG, KAI-WEI CHENG, YU-RUEI LI, WAN-TING LO
  • Publication number: 20210296734
    Abstract: The disclosure provides a separator comprising a porous substrate and a heat-resistant layer disposed on a surface of the substrate. The heat-resistant layer comprises a binder and a plurality of inorganic particles, wherein the heat-resistant layer is disposed on the surface of the porous substrate in the range of 10% to 90% of the total surface area of the porous substrate.
    Type: Application
    Filed: January 28, 2021
    Publication date: September 23, 2021
    Inventors: WEI-TING YEH, YI-FANG HUANG, KAI-WEI CHENG, YU-RUEI LI, WAN-TING LO
  • Publication number: 20210175483
    Abstract: The present disclosure relates to a ceramic separator. The ceramic separator comprises a porous polyolefin substrate and a ceramic layer on the at least one surface of the porous polyolefin substrate. The ceramic layer comprises polydopamine-surface-decorated inorganic particles and a water-based binder. In addition to the necessary physical properties of common separators, the ceramic separator has excellent wettability and rate of absorption so as to improve the capacity and stability of batteries at a high battery discharge rate.
    Type: Application
    Filed: May 5, 2020
    Publication date: June 10, 2021
    Inventors: Kai-Wei CHENG, Mei-Sia LYU, Wei-Ting YEH
  • Patent number: 9193044
    Abstract: An adjustable spanner for quickly turning an object includes a moving member, a first jaw, a second jaw, and a grip. The moving member is movably joined to the grip. The first jaw is adjustably jointed to the moving member. The second jaw is pivotally joined to the grip and cooperates with the first jaw to clamp the object. A user grasps the grip when using the adjustable spanner.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: November 24, 2015
    Assignee: APEX TOOL (HK) LIMITED TAIWAN BRANCH
    Inventor: Kai-Wei Cheng
  • Publication number: 20120055292
    Abstract: An adjustable spanner for quickly turning an object includes a moving member, a first jaw, a second jaw, and a grip. The moving member is movably joined to the grip. The first jaw is adjustably jointed to the moving member. The second jaw is pivotally joined to the grip and cooperates with the first jaw to clamp the object. A user grasps the grip when using the adjustable spanner.
    Type: Application
    Filed: April 15, 2011
    Publication date: March 8, 2012
    Applicant: DANAHER TOOL LIMITED, TAIWAN BRANCH
    Inventor: Kai-Wei Cheng