Patents by Inventor Ralph L. Langen

Ralph L. Langen 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).

  • Desk chair
    Patent number: D446033
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: August 7, 2001
    Assignee: Kimball International, Inc.
    Inventors: Marcus C. Koepke, Ralph L. Langen
  • Side chair
    Patent number: D446037
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: August 7, 2001
    Assignee: Kimball International, Inc.
    Inventors: Marcus C. Koepke, Ralph L. Langen
  • Chair
    Patent number: D390712
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: February 17, 1998
    Assignee: Kimball International, Inc.
    Inventors: Marcus Koepke, Ralph L. Langen, Neil Broeker
  • Lounge end
    Patent number: D662733
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: July 3, 2012
    Assignee: Kimball International, Inc.
    Inventors: Keith E. Metcalf, Ralph L. Langen, Jeffrey P. Bueltel, Todd E. Boyd, Stanley J. Epple
  • Lounge end
    Patent number: D668892
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: October 16, 2012
    Assignee: Kimball International, Inc.
    Inventors: Keith E. Metcalf, Ralph L. Langen, Jeffrey P. Bueltel, Todd E. Boyd, Stanley J. Epple
  • Lounge corner unit
    Patent number: D671333
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: November 27, 2012
    Assignee: Kimball International, Inc.
    Inventors: Keith E. Metcalf, Ralph L. Langen, Jeffrey P. Bueltel, Todd E. Boyd, Stanley J. Epple
  • Lounge
    Patent number: D680347
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: April 23, 2013
    Assignee: Kimball International, Inc.
    Inventors: Keith E. Metcalf, Ralph L. Langen, Jeffrey P. Bueltel, Todd E. Boyd, Stanley J. Epple
  • Bench
    Patent number: D688476
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: August 27, 2013
    Assignee: Kimball International, Inc.
    Inventors: Keith E. Metcalf, Ralph L. Langen, Jeffrey P. Bueltel, Todd E. Boyd, Stanley J. Epple
  • Lounge
    Patent number: D695038
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: December 10, 2013
    Assignee: Kimball International, Inc.
    Inventors: Keith E. Metcalf, Ralph L. Langen, Jeffrey P. Bueltel, Todd E. Boyd, Stanley J. Epple