Patents by Inventor Jeff Rahlf

Jeff Rahlf 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).

  • Process and materials using z-filter media, and/or, closing flutes of filter media; and, products
    Patent number: 9770686
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred media, filter constructions having such media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: September 26, 2017
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin Schrage, Eugene Lensing, Donald Mork, Troy Murphy, Jeff Rahlf, Gregory Reichter, Daniel Risch
  • Z-filter media pack arrangement; and, methods
    Patent number: 9114346
    Abstract: Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: August 25, 2015
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin Schrage, Eugene Lensing, Jeff Rahlf, Wayne Bishop, Gregory Reichter, Benny Nelson, Rodger Spears, Bruce Crenshaw, Vladimir Kladnitsky
  • PROCESS AND MATERIALS USING Z-FILTER MEDIA, AND/OR, CLOSING FLUTES OF FILTER MEDIA; AND, PRODUCTS
    Publication number: 20150231547
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred media, filter constructions having such media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 20, 2015
    Inventors: KEVIN SCHRAGE, Eugene Lensing, Donald Mork, Troy Murphy, Jeff Rahlf, Gregory Reichter, Daniel Risch
  • Process and materials for coiling z-filter media; and/or closing flutes of filter media; and, products
    Patent number: 8961722
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred corrugated media, filter constructions having such corrugated media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: February 24, 2015
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin Schrage, Eugene Lensing, Donald Mork, Troy Murphy, Jeff Rahlf, Gregory Reichter, Daniel Risch
  • Z-FILTER MEDIA PACK ARRANGEMENT; AND, METHODS
    Publication number: 20140123610
    Abstract: Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Application
    Filed: August 26, 2013
    Publication date: May 8, 2014
    Applicant: DONALDSON COMPANY, INC.
    Inventors: KEVIN SCHRAGE, EUGENE LENSING, JEFF RAHLF, WAYNE BISHOP, GREGORY REICHTER, BENNY NELSON, RODGER SPEARS, BRUCE CRENSHAW, VLADIMIR KLADNITSKY
  • Process and materials for coiling z-filter media; and/or closing flutes of filter media; and, products
    Publication number: 20140061120
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred corrugated media, filter constructions having such corrugated media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Application
    Filed: July 29, 2013
    Publication date: March 6, 2014
    Applicant: DONALDSON COMPANY, INC.
    Inventors: Kevin Schrage, Eugene Lensing, Donald Mork, Troy Murphy, Jeff Rahlf, Gregory Reichter, Daniel Risch
  • Z-filter media pack arrangement; and, methods
    Patent number: 8518141
    Abstract: Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: August 27, 2013
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin Schrage, Eugene Lensing, Jeff Rahlf, Wayne Bishop, Gregory Reichter, Benny Nelson, Rodger Spears, Bruce Crenshaw, Vladimir Kladnitsky
  • Process and materials for coiling z-filter media; and/or closing flutes of filter media; and, products
    Patent number: 8496774
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred corrugated media, filter constructions having such corrugated media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: July 30, 2013
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin Schrage, Eugene Lensing, Donald Mork, Troy Murphy, Jeff Rahlf, Gregory Reichter, Daniel Risch
  • Process and materials for coiling z-filter media, and/or closing flutes of filter media; and, products
    Publication number: 20070039296
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred corrugated media, filter constructions having such corrugated media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Application
    Filed: March 17, 2004
    Publication date: February 22, 2007
    Applicant: Donaldson Company Inc.
    Inventors: Kevin Schrage, Eugene Lensing, Donald Mork, Troy Murphy, Jeff Rahlf, Gregory Reichter, Daniel Risch
  • Z-filter media pack arrangement; and, methods
    Patent number: RE46700
    Abstract: Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: February 6, 2018
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin Schrage, Eugene Lensing, Jeff Rahlf, Wayne Bishop, Gregory Reichter, Benny Nelson, Rodger Spears, Bruce Crenshaw, Vladimir Kladnitsky
  • Z-filter media pack arrangement; and, methods
    Patent number: RE48050
    Abstract: Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: June 16, 2020
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin Schrage, Eugene Lensing, Jeff Rahlf, Wayne Bishop, Gregory Reichter, Benny Nelson, Rodger Spears, Bruce Crenshaw, Vladimir Kladnitsky