Patents by Inventor Philipp Ehrhardt

Philipp Ehrhardt 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).

  • Patent number: 12467537
    Abstract: An annular filter element and sealing element for an oil separator of a crankcase ventilation system, the filter element has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat. The sealing element having at least one radially sealing region that is configured to act in the direction of the radius of the annular filter element, and at least one axially sealing region that is configured to act in the direction of the longitudinal axis of the annular filter element.
    Type: Grant
    Filed: October 19, 2023
    Date of Patent: November 11, 2025
    Assignee: MANN+HUMMEL GmbH
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt
  • Publication number: 20240084896
    Abstract: An annular filter element and sealing element for an oil separator of a crankcase ventilation system, the filter element has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat. The sealing element having at least one radially sealing region that is configured to act in the direction of the radius of the annular filter element, and at least one axially sealing region that is configured to act in the direction of the longitudinal axis of the annular filter element.
    Type: Application
    Filed: October 19, 2023
    Publication date: March 14, 2024
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt
  • Patent number: 11892078
    Abstract: An annular filter element and sealing element for an oil separator of a crankcase ventilation system, the filter element has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat. The sealing element having at least one radially sealing region that is configured to act in the direction of the radius of the annular filter element, and at least one axially sealing region that is configured to act in the direction of the longitudinal axis of the annular filter element.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: February 6, 2024
    Assignee: MANN+HUMMEL GmbH
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt
  • Publication number: 20210164569
    Abstract: An annular filter element and sealing element for an oil separator of a crankcase ventilation system, the filter element has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat. The sealing element having at least one radially sealing region that is configured to act in the direction of the radius of the annular filter element, and at least one axially sealing region that is configured to act in the direction of the longitudinal axis of the annular filter element.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 3, 2021
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt
  • Patent number: 10876631
    Abstract: A sealing element (60) for an annular filter element (100) of an oil separator (200) of a crankcase ventilation system, wherein the annular filter element (100) is configured to separate oil from fluid. The sealing element (60) fulfills more than one sealing function and yet is easy to use and replace. The sealing element (60) having at least one radially sealing region (64) that is configured to act in the direction of the radius (120) of the annular filter element (100), and at least one axially sealing region (66) that is configured to act in the direction of the longitudinal axis (110) of the annular filter element (100).
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: December 29, 2020
    Assignee: MANN+HUMMEL GmbH
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt
  • Patent number: 10865672
    Abstract: The invention describes a filter element for an oil separator of a crankcase ventilation system in which a filter element is configured to separate oil from fluid and that has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat.
    Type: Grant
    Filed: February 17, 2019
    Date of Patent: December 15, 2020
    Assignee: MANN+HUMMEL GmbH
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt
  • Patent number: 10221736
    Abstract: The invention describes a filter element for an oil separator of a crankcase ventilation system in which a filter element is configured to separate oil from fluid and that has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: March 5, 2019
    Assignee: MANN+HUMMEL GmbH
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt
  • Publication number: 20160348550
    Abstract: The invention describes a filter element for an oil separator of a crankcase ventilation system in which a filter element is configured to separate oil from fluid and that has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat.
    Type: Application
    Filed: June 1, 2016
    Publication date: December 1, 2016
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt
  • Publication number: 20160348790
    Abstract: A sealing element (60) for an annular filter element (100) of an oil separator (200) of a crankcase ventilation system, wherein the annular filter element (100) is configured to separate oil from fluid. The sealing element (60) fulfills more than one sealing function and yet is easy to use and replace. The sealing element (60) having at least one radially sealing region (64) that is configured to act in the direction of the radius (120) of the annular filter element (100), and at least one axially sealing region (66) that is configured to act in the direction of the longitudinal axis (110) of the annular filter element (100).
    Type: Application
    Filed: June 1, 2016
    Publication date: December 1, 2016
    Inventors: Markus Zuerker, Markus Melde, Philipp Ehrhardt