Patents by Inventor Donald K. Sandberg

Donald K. Sandberg 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).

  • Chair
    Patent number: D360316
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: July 18, 1995
    Assignee: Steelcase Inc.
    Inventors: David N. Hodge, Michael L. Diemen, David C. Jenkins, Michael L. Mercier, Donald K. Sandberg, David S. Teppo
  • Chair seat
    Patent number: D367980
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: March 19, 1996
    Assignee: Steelcase, Inc.
    Inventors: David N. Hodge, Michael L. Diemen, David C. Jenkins, Michael L. Mercier, Donald K. Sandberg, David S. Teppo
  • Chair seat
    Patent number: D372611
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: August 13, 1996
    Assignee: Steelcase, Inc.
    Inventors: David N. Hodge, Michael L. Deimen, David C. Jenkins, Michael L. Mercier, Donald K. Sandberg, David S. Teppo
  • Chair actuator
    Patent number: D383019
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: September 2, 1997
    Assignee: Steelcase Inc.
    Inventors: David N. Hodge, Michael L. Deimen, David C. Jenkins, Michael L. Mercier, Donald K. Sandberg, David S. Teppo