Patents by Inventor Charles Haire

Charles Haire 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).

  • Biaxially oriented microporous membrane
    Patent number: 11420416
    Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 23, 2022
    Assignee: Celgard, LLC
    Inventors: Xiangyun Wei, Charles Haire
  • BIAXIALLY ORIENTED MICROPOROUS MEMBRANE
    Publication number: 20210162706
    Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 3, 2021
    Inventors: Xiangyun Wei, Charles Haire
  • Biaxially oriented microporous membrane
    Patent number: 10913237
    Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: February 9, 2021
    Assignee: Celgard, LLC
    Inventors: Xiangyun Wei, Charles Haire
  • BIAXIALLY ORIENTED MICROPOROUS MEMBRANE
    Publication number: 20140302374
    Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Inventors: Xiangyun Wei, Charles Haire
  • BIAXIALLY ORIENTED MICROPOROUS MEMBRANE
    Publication number: 20140287322
    Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction stretching including a simultaneous controlled machine direction relax.
    Type: Application
    Filed: June 6, 2014
    Publication date: September 25, 2014
    Inventors: Xiangyun Wei, Charles Haire
  • Biaxially oriented microporous membrane
    Patent number: 8795565
    Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction including a simultaneous controlled machine direction relax.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: August 5, 2014
    Assignee: Celgard LLC
    Inventors: Xiangyun Wei, Charles Haire
  • BIAXIALLY ORIENTED MICROPOROUS MEMBRANE
    Publication number: 20070196638
    Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction including a simultaneous controlled machine direction relax.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 23, 2007
    Inventors: Xiangyun Wei, Charles Haire