Patents by Inventor Jeffrey J. Ivarson

Jeffrey J. Ivarson 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).

  • Backpack apparatus
    Patent number: 6474524
    Abstract: A pack article includes a flexible container having front, back, right side, and left side panels connected together to define an internal cavity, a flap to enable access to the internal cavity, and at least one divider within the internal cavity connected to and intersecting the back panel at a diagonal, and extending between the right and left side panels to provide a diagonal support surface for an item placed within the pack. The angle of the divider serves to orient the contained load of the pack and direct the weight of the load towards the back panel, thereby distributing the weight along the length of the user's back.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: November 5, 2002
    Inventors: Jeffrey J. Ivarson, Henrietta L. Ivarson, Ian C. Ivarson
  • Backpack
    Patent number: D437110
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: February 6, 2001
    Inventors: Jeffrey J. Ivarson, Henrietta L. Ivarson, Ian C. Ivarson
  • Body member for a housing for an air cleaner
    Patent number: D440645
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: April 17, 2001
    Assignee: Donaldson Company, Inc.
    Inventors: Paul R. Coulonvaux, Johan G. Dewit, Jeffrey J. Ivarson
  • Air cleaner cover
    Patent number: D462117
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: August 27, 2002
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Peter J. Murray, Gary J. Rocklitz, Junhui Liu, Jeffrey J. Ivarson
  • Printer
    Patent number: D307296
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: April 17, 1990
    Assignee: Varitronic Systems, Inc.
    Inventors: Jeffrey J. Ivarson, Daniel J. Riley
  • Combined thermal lettering and page layout printer
    Patent number: D314584
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: February 12, 1991
    Assignee: Varitronic Systems, Inc.
    Inventors: Jeffrey J. Ivarson, Courtney D. Reeser, Daniel J. Riley
  • Filter element
    Patent number: D401306
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: November 17, 1998
    Assignee: Donaldson Company, Inc.
    Inventors: Dennis E. Ward, Kevin J. Schrage, Paul R. Coulonvaux, Johan G. Dewit, Jeffrey J. Ivarson
  • Body member for a housing for an air cleaner
    Patent number: D407475
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: March 30, 1999
    Assignee: Donaldson Company, Inc.
    Inventors: Paul R. Coulonvaux, Johan G. Dewit, Jeffrey J. Ivarson
  • Coalescer filter
    Patent number: D410010
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: May 18, 1999
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Robert Allen Dushek, Jeffrey J. Ivarson
  • Housing for an air cleaner
    Patent number: D412567
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: August 3, 1999
    Assignee: Donaldson Company, Inc.
    Inventors: Dennis E. Ward, Kevin J. Schrage, Paul R. Coulonvaux, Johan G. Dewit, Jeffrey J. Ivarson
  • Cover for a housing for an air cleaner
    Patent number: D412568
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: August 3, 1999
    Assignee: Donaldson Company, Inc.
    Inventors: Dennis E. Ward, Kevin J. Schrage, Paul R. Coulonvaux, Johan G. Dewit, Jeffrey J. Ivarson
  • Filter element
    Patent number: D414544
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: September 28, 1999
    Assignee: Donaldson Company, Inc.
    Inventors: Dennis E. Ward, Kevin J. Schrage, Paul R. Coulonvaux, Johan G. Dewit, Jeffrey J. Ivarson
  • Safety filter element
    Patent number: D416308
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: November 9, 1999
    Assignee: Donaldson Company, Inc.
    Inventors: Dennis E. Ward, Kevin J. Schrage, Paul R. Coulonvaux, Johan G. Dewit, Jeffrey J. Ivarson
  • Coalescer filter with rear plate
    Patent number: D420117
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: February 1, 2000
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Robert Allen Dushek, Jeffrey J. Ivarson
  • Body member for a housing for an air cleaner
    Patent number: D421110
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: February 22, 2000
    Assignee: Donaldson Company, Inc.
    Inventors: Paul R. Coulonvaux, Johan G. Dewit, Jeffrey J. Ivarson