Patents by Inventor Richard Patrick DeJong

Richard Patrick DeJong 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).

  • FILTER MEDIA, ELEMENTS, AND METHODS
    Publication number: 20240139662
    Abstract: Fibrous filter medium that includes a surface-loading filter layer comprising fine fibers having an average diameter of less than 1 micron; a depth loading filter layer; and a support layer; wherein the layers are configured and arranged for placement in a gas stream with the surface loading filter layer being the most upstream layer.
    Type: Application
    Filed: November 6, 2023
    Publication date: May 2, 2024
    Inventors: Qiong Gao, Richard Patrick DeJong, Gregory S. Tronnes, Jason A. Tiffany, Giancarlo M. Izzi
  • Filter media, elements, and methods
    Patent number: 11845027
    Abstract: Fibrous filter medium that includes a surface-loading filter layer comprising fine fibers having an average diameter of less than 1 micron; a depth loading filter layer; and a support layer; wherein the layers are configured and arranged for placement in a gas stream with the surface loading filter layer being the most upstream layer.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: December 19, 2023
    Assignee: Donaldson Company, Inc.
    Inventors: Qiong Gao, Richard Patrick DeJong, Gregory S. Tronnes, Jason A. Tiffany, Giancarlo M. Izzi
  • FILTER MEDIA, ELEMENTS, AND METHODS
    Publication number: 20220118387
    Abstract: Fibrous filter medium that includes a surface-loading filter layer comprising fine fibers having an average diameter of less than 1 micron; a depth loading filter layer; and a support layer; wherein the layers are configured and arranged for placement in a gas stream with the surface loading filter layer being the most upstream layer.
    Type: Application
    Filed: October 12, 2021
    Publication date: April 21, 2022
    Inventors: Qiong Gao, Richard Patrick DeJong, Gregory S. Tronnes, Jason A. Tiffany, Giancarlo M. Izzi
  • Filter media, elements, and methods
    Patent number: 11161070
    Abstract: Fibrous filter medium that includes a surface-loading filter layer comprising fine fibers having an average diameter of less than 1 micron; a depth loading filter layer; and a support layer; wherein the layers are configured and arranged for placement in a gas stream with the surface loading filter layer being the most upstream layer.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: November 2, 2021
    Assignee: Donaldson Company, Inc.
    Inventors: Qiong Gao, Richard Patrick DeJong, Gregory S. Tronnes, Jason A. Tiffany, Giancarlo M. Izzi
  • FILTER MEDIA, ELEMENTS, AND METHODS
    Publication number: 20190255473
    Abstract: Fibrous filter medium that includes a surface-loading filter layer comprising fine fibers having an average diameter of less than 1 micron; a depth loading filter layer; and a support layer; wherein the layers are configured and arranged for placement in a gas stream with the surface loading filter layer being the most upstream layer.
    Type: Application
    Filed: May 5, 2017
    Publication date: August 22, 2019
    Inventors: Qiong Gao, Richard Patrick DeJong, Gregory S. Tronnes, Jason A. Tiffany, Giancarlo M. Izzi
  • FILTER MEDIA AND ELEMENTS
    Publication number: 20160129381
    Abstract: Fibrous filter medium that includes a melt-blown filter layer comprising melt-blown fibers and a high-efficiency glass-containing filter layer comprising glass fibers.
    Type: Application
    Filed: March 5, 2014
    Publication date: May 12, 2016
    Inventors: Qiong Gao, Gregory S. Tronnes, Raskesh Kumar Yadav, Michael A. Madden, William Charles Goodson, Richard Patrick DeJong