Patents by Inventor Johan DeWitt

Johan DeWitt 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).

  • AIR CLEANER ARRANGEMENTS; COMPONENTS; AND METHODS
    Publication number: 20160279557
    Abstract: An air cleaner assembly and components therefor are described. The components include features of an air cleaner housing; advantageous main filter cartridges; and, advantageous safety filter cartridge features. Features of the main filter cartridge are provided to engage an access cover of the assembly, and a cartridge support within the housing, in a preferred manner. Methods of assembly and use are also described.
    Type: Application
    Filed: December 22, 2015
    Publication date: September 29, 2016
    Inventors: Douglas Iddings, Daniel Adamek, Thomas Miller, Johan DeWitt
  • AIR CLEANER ARRANGEMENTS; COMPONENTS; AND, METHODS
    Publication number: 20140096495
    Abstract: An air cleaner assembly and components therefor are described. The components include features of an air cleaner housing; advantageous main filter cartridges; and, advantageous safety filter cartridge features. Features of the main filter cartridge are provided to engage an access cover of the assembly, and a cartridge support within the housing, in a preferred manner. Methods of assembly and use are also described.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 10, 2014
    Applicant: Donaldson Company, Inc.
    Inventors: Douglas Iddings, Daniel Adamek, Thomas Miller, Johan DeWitt
  • Air cleaner arrangements; components; and, methods
    Patent number: 8545588
    Abstract: An air cleaner assembly and components therefor are described. The components include features of an air cleaner housing; advantageous main filter cartridges; and, advantageous safety filter cartridge features. Features of the main filter cartridge are provided to engage an access cover of the assembly, and a cartridge support within the housing, in a preferred manner. Methods of assembly and use are also described.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: October 1, 2013
    Assignee: Donaldson Company, Inc.
    Inventors: Douglas Lee Iddings, Daniel Adamek, Thomas G. Miller, James R. Scott, Johan DeWitt
  • AIR CLEANER ARRANGEMENTS; COMPONENTS; AND, METHODS
    Publication number: 20120031060
    Abstract: An air cleaner assembly and components therefor are described. The components include features of an air cleaner housing; advantageous main filter cartridges; and, advantageous safety filter cartridge features. Features of the main filter cartridge are provided to engage an access cover of the assembly, and a cartridge support within the housing, in a preferred manner. Methods of assembly and use are also described.
    Type: Application
    Filed: October 17, 2011
    Publication date: February 9, 2012
    Applicant: DONALDSNO COMPANY, INC.
    Inventors: DOUGLAS LEE IDDINGS, Daniel Adamek, Thomas G. Miller, James R. Scott, Johan DeWitt
  • Air cleaner arrangements; components; and, methods
    Patent number: 8038756
    Abstract: An air cleaner assembly and components therefor are described. The components include features of an air cleaner housing; advantageous main filter cartridges; and, advantageous safety filter cartridge features. Features of the main filter cartridge are provided to engage an access cover of the assembly, and a cartridge support within the housing, in a preferred manner. Methods of assembly and use are also described.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: October 18, 2011
    Assignee: Donaldson Company, Inc.
    Inventors: Douglas Lee Iddings, Daniel Adamek, Thomas G. Miller, James R. Scott, Johan DeWitt
  • Air cleaner arrangements; components; and, methods
    Publication number: 20090100813
    Abstract: An air cleaner assembly and components therefor are described. The components include features of an air cleaner housing; advantageous main filter cartridges; and, advantageous safety filter cartridge features. Features of the main filter cartridge are provided to engage an access cover of the assembly, and a cartridge support within the housing, in a preferred manner. Methods of assembly and use are also described.
    Type: Application
    Filed: July 17, 2008
    Publication date: April 23, 2009
    Applicant: Donaldson Company, Inc
    Inventors: Douglas Lee Iddings, Daniel Adamek, Thomas G. Miller, James R. Scott, Johan DeWitt