Patents by Inventor Keh B. Dema

Keh B. Dema 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: 20240133092
    Abstract: A thermally bonded filtration media that can be used in high temperature conditions in the absence of any loss of fiber through thermal effects or mechanical impact on the fiber components is disclosed. The filter media can be manufactured and used in a filter unit or structure, can be placed in a stream of removable fluid, and can remove a particulate load from the mobile stream at an increased temperature range. The combination of bi-component fiber, other filter media fiber, and other filtration additives provides an improved filtration media having unique properties in high temperature, high performance applications.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 25, 2024
    Inventors: Daniel Little, Robert M. Rogers, Derek O. Jones, Keh B. Dema
  • Patent number: 11821119
    Abstract: A thermally bonded filtration media that can be used in high temperature conditions in the absence of any loss of fiber through thermal effects or mechanical impact on the fiber components is disclosed. The filter media can be manufactured and used in a filter unit or structure, can be placed in a stream of removable fluid, and can remove a particulate load from the mobile stream at an increased temperature range. The combination of bi-component fiber, other filter media fiber, and other filtration additives provides an improved filtration media having unique properties in high temperature, high performance applications.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: November 21, 2023
    Assignee: DONALDSON COMPANY, INC.
    Inventors: Daniel Little, Robert M. Rogers, Derek O. Jones, Keh B. Dema
  • Publication number: 20230226475
    Abstract: A filter and filter media configured and arranged for placement in a fuel stream is disclosed. The filter and filter media allow for filtering of liquid fuels, such as diesel fuel. In certain embodiments the filter media includes a media fiber (such as glass) and a binder fiber (such as bicomponent) that combine to create a media structure having low solidity and relatively low compressibility, and which contain a pore structure that avoids premature fouling of the filter by fuel degradation products.
    Type: Application
    Filed: January 6, 2023
    Publication date: July 20, 2023
    Inventors: Derek O. Jones, Keh B. Dema, Stephen M. Larsen, Mike J. Madsen, Andrew J. Dallas, Yehya A. Elsayed, Chuanfang Yang
  • Publication number: 20230149840
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Application
    Filed: November 18, 2022
    Publication date: May 18, 2023
    Inventors: Robert M. Rogers, Keh B. Dema, Brad E. Kahlbaugh, Linda M. Olson, Chuanfang Yang, Gregory L. LaVallee, Timothy D. Sporre, Joe Israel, Paul L. Kojetin, Derek O. Jones, Michael A. Madden
  • Patent number: 11565206
    Abstract: A filter and filter media configured and arranged for placement in a fuel stream is disclosed. The filter and filter media allow for filtering of liquid fuels, such as diesel fuel. In certain embodiments the filter media includes a media fiber (such as glass) and a binder fiber (such as bicomponent) that combine to create a media structure having low solidity and relatively low compressibility, and which contain a pore structure that avoids premature fouling of the filter by fuel degradation products.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: January 31, 2023
    Assignee: Donaldson Company, Inc.
    Inventors: Derek O. Jones, Keh B. Dema, Stephen M. Larsen, Mike J. Madsen, Andrew J. Dallas, Yehya A. Elsayed, Chuanfang Yang
  • Patent number: 11504663
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: November 22, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Robert M. Rogers, Keh B. Dema, Brad E. Kahlbaugh, Linda M. Olson, Chuanfang Yang, Gregory L. LaVallee, Timothy D. Sporre, Joe Israel, Paul L. Kojetin, Derek O. Jones, Michael A. Madden
  • Publication number: 20210362081
    Abstract: A thermally bonded filtration media that can be used in high temperature conditions in the absence of any loss of fiber through thermal effects or mechanical impact on the fiber components is disclosed. The filter media can be manufactured and used in a filter unit or structure, can be placed in a stream of removable fluid, and can remove a particulate load from the mobile stream at an increased temperature range. The combination of bi-component fiber, other filter media fiber, and other filtration additives provides an improved filtration media having unique properties in high temperature, high performance applications.
    Type: Application
    Filed: June 29, 2021
    Publication date: November 25, 2021
    Inventors: Daniel Little, Robert M. Rogers, Derek O. Jones, Keh B. Dema
  • Patent number: 11180876
    Abstract: A thermally bonded filtration media that can be used in high temperature conditions in the absence of any loss of fiber through thermal effects or mechanical impact on the fiber components is disclosed. The filter media can be manufactured and used in a filter unit or structure, can be placed in a stream of removable fluid, and can remove a particulate load from the mobile stream at an increased temperature range. The combination of bi-component fiber, other filter media fiber, and other filtration additives provides an improved filtration media having unique properties in high temperature, high performance applications.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: November 23, 2021
    Assignee: Donaldson Company, Inc.
    Inventors: Daniel Little, Robert M. Rogers, Derek O. Jones, Keh B. Dema
  • Publication number: 20200330912
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Application
    Filed: February 20, 2020
    Publication date: October 22, 2020
    Inventors: Robert M. Rogers, Keh B. Dema, Brad E. Kahlbaugh, Linda M. Olson, Chuanfang Yang, Gregory L. LaVallee, Timothy D. Sporre, Joe Israel, Paul L. Kojetin, Derek O. Jones, Michael A. Madden
  • Patent number: 10610813
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: April 7, 2020
    Assignee: Donaldson Company, Inc.
    Inventors: Robert M. Rogers, Keh B. Dema, Brad E. Kahlbaugh, Linda M. Olson, Chuanfang Yang, Gregory L. LaVallee, Timothy D. Sporre, Joe Israel, Paul L. Kojetin, Derek O. Jones, Michael A. Madden
  • Publication number: 20190270040
    Abstract: A filter and filter media configured and arranged for placement in a fuel stream is disclosed. The filter and filter media allow for filtering of liquid fuels, such as diesel fuel. In certain embodiments the filter media includes a media fiber (such as glass) and a binder fiber (such as bicomponent) that combine to create a media structure having low solidity and relatively low compressibility, and which contain a pore structure that avoids premature fouling of the filter by fuel degradation products.
    Type: Application
    Filed: March 11, 2019
    Publication date: September 5, 2019
    Inventors: Derek O. Jones, Keh B. Dema, Stephen M. Larsen, Mike J. Madsen, Andrew J. Dallas, Yehya A. Elsayed, Chuanfang Yang
  • Patent number: 10226723
    Abstract: A filter and filter media configured and arranged for placement in a fuel stream is disclosed. The filter and filter media allow for filtering of liquid fuels, such as diesel fuel. In certain embodiments the filter media includes a media fiber (such as glass) and a binder fiber (such as bicomponent) that combine to create a media structure having low solidity and relatively low compressibility, and which contain a pore structure that avoids premature fouling of the filter by fuel degradation products.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: March 12, 2019
    Assignee: Donaldson Company, Inc.
    Inventors: Derek O. Jones, Keh B. Dema, Stephen M. Larsen, Mike J. Madsen, Andrew J. Dallas, Yehya A. Elsayed, Chuanfang Yang
  • Patent number: 9795906
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 24, 2017
    Assignee: DONALDSON COMPANY, INC.
    Inventors: Robert M. Rogers, Keh B. Dema, Brad E. Kahlbaugh, Linda M. Olson, Chuanfang Yang, Gregory L. LaVallee, Timothy D. Sporre, Joe Israel, Paul L. Kojetin, Derek O. Jones, Michael A. Madden
  • Publication number: 20170225105
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Application
    Filed: February 16, 2017
    Publication date: August 10, 2017
    Inventors: Robert M. Rogers, Keh B. Dema, Brad E. Kahlbaugh, Linda M. Olson, Chuanfang Yang, Gregory L. LaVallee, Timothy D. Sporre, Joe Israel, Paul L. Kojetin, Derek O. Jones, Michael A. Madden
  • Publication number: 20160038865
    Abstract: A filter and filter media configured and arranged for placement in a fuel stream is disclosed. The filter and filter media allow for filtering of liquid fuels, such as diesel fuel. In certain embodiments the filter media includes a media fiber (such as glass) and a binder fiber (such as bicomponent) that combine to create a media structure having low solidity and relatively low compressibility, and which contain a pore structure that avoids premature fouling of the filter by fuel degradation products.
    Type: Application
    Filed: May 20, 2015
    Publication date: February 11, 2016
    Inventors: Derek O. Jones, Keh B. Dema, Stephen M. Larsen, Mike J. Madsen, Andrew J. Dallas, Yehya A. Elsayed, Chuanfang Yang
  • Patent number: 9056268
    Abstract: A filter and filter media configured and arranged for placement in a fuel stream is disclosed. The filter and filter media allow for filtering of liquid fuels, such as diesel fuel. In certain embodiments the filter media includes a media fiber (such as glass) and a binder fiber (such as bicomponent) that combine to create a media structure having low solidity and relatively low compressibility, and which contain a pore structure that avoids premature fouling of the filter by fuel degradation products.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: June 16, 2015
    Assignee: Donaldson Company, Inc.
    Inventors: Derek O. Jones, Keh B. Dema, Stephen M. Larsen, Mike J. Madsen, Andrew J. Dallas, Yehya A. Elsayed, Chuanfang Yang
  • Publication number: 20140197094
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Application
    Filed: December 19, 2013
    Publication date: July 17, 2014
    Applicant: Donaldson Company, Inc.
    Inventors: Robert M. Rogers, Keh B. Dema
  • Patent number: 8641796
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 4, 2014
    Assignee: Donaldson Company, Inc.
    Inventors: Robert M. Rogers, Keh B. Dema
  • Patent number: RE47737
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: November 26, 2019
    Assignee: Donaldson Company, Inc.
    Inventors: Brad E. Kahlbaugh, Keh B. Dema, Linda M. Olson, Joe Israel, Derek O. Jones, Gregory L. LaVallee, Michael A. Madden, Chuanfang Yang, Robert M. Rogers, Paul L. Kojetin, Timothy D. Sporre
  • Patent number: RE49097
    Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: June 7, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: Brad E. Kahlbaugh, Keh B. Dema, Linda M. Olson, Joe Israel, Derek O. Jones, Gregory L. LaVallee, Michael A. Madden, Chuanfang Yang, Robert M. Rogers, Paul L. Kojetin, Timothy D. Sporre