LD

Larry DeKraker

SD Steelcase Development: 26 patents #8 of 472Top 2%
ST Steelcase: 9 patents #104 of 809Top 15%
Overall (All Time): #99,301 of 4,157,543Top 3%
35
Patents All Time

Issued Patents All Time

Showing 25 most recent of 35 patents

Patent #TitleCo-InventorsDate
7712834 Back support for seating unit Glenn A. Knoblock, Arnold B. Dammermann, Kurt R. Heidmann, Gordon J. Peterson, Charles P. Roossien +1 more 2010-05-11
7427105 Back construction for seating unit Glenn A. Knoblock, Kurt R. Heidmann, Gordon J. Peterson, Charles P. Roossien, David S. Teppo +1 more 2008-09-23
7131700 Back construction for seating unit Glenn A. Knoblock, Kurt R. Heidmann, Gordon J. Peterson, Charles P. Roossien, David S. Teppo +1 more 2006-11-07
7114777 Chair having reclineable back and movable seat Arnold B. Dammermann, Kurt R. Heidmann, Gordon J. Peterson, Charles P. Roossien, David S. Teppo +1 more 2006-10-03
7040711 Nonslip bearing arrangement Kurt R. Heidmann 2006-05-09
7040709 Back construction for seating unit having inverted U-shaped frame Glenn A. Knoblock, Kurt R. Heidmann, Gordon J. Peterson, Charles P. Roossien, David S. Teppo +1 more 2006-05-09
6991291 Back construction for seating unit having spring bias Glenn A. Knoblock, Kurt R. Heidmann, Gordon J. Peterson, Charles P. Roossien, David S. Teppo +1 more 2006-01-31
6905171 Seating unit including novel back construction Glenn A. Knoblock, Kevin A. Ekdahl, Kurt R. Heidmann, Gardner Klaasen, James A. Perkins +6 more 2005-06-14
6817668 Seating unit with variable back stop and seat bias Kurt R. Heidmann 2004-11-16
6749261 Seating unit including novel back construction Glenn A. Knoblock, Arnold B. Dammermann, Kevin A. Ekdahl, Kurt R. Heidmann, Gardner Klaasen +6 more 2004-06-15
6460928 Seating unit including novel back construction Glenn A. Knoblock, Arnold B. Dammermann, Kevin A. Ekdahl, Kurt R. Heidmann, Gardner Klaasen +6 more 2002-10-08
6394548 Seating unit with novel seat construction Robert J. Battey, Glenn A. Knoblock, Kurt R. Heidmann, Michelle R. Johnson, Robert Scheper 2002-05-28
6394545 Back for seating unit Glenn A. Knoblock, Arnold B. Dammermann, Kevin A. Ekdahl, Kurt R. Heidmann, Gardner Klaasen +6 more 2002-05-28
6394546 Lumbar device Glenn A. Knoblock, Arnold B. Dammermann, Kevin A. Ekdahl, Kurt R. Heidmann, Gardner Klaasen +6 more 2002-05-28
6394549 Seating unit with reclineable back and forwardly movable seat Kurt R. Heidmann, Glenn A. Knoblock, David S. Teppo 2002-05-28
6367877 Back for seating unit Glenn A. Knoblock, Arnold B. Dammermann, Kevin A. Ekdahl, Kurt R. Heidmann, Gardner Klaasen +6 more 2002-04-09
6349992 Seating unit including novel back construction Glenn A. Knoblock, Arnold B. Dammermann, Kevin A. Ekdahl, Kurt R. Heidmann, Gardner Klaasen +6 more 2002-02-26
6318800 Seating unit with novel pivot mounts and method of assembly 2001-11-20
6302486 Seating unit with adjustable armrest Michel A. Lamart, Arnold B. Dammermann, Glenn A. Knoblock, Robert S. Grooters, John Hanna J. Hasbany 2001-10-16
6224155 Vertical height adjustment mechanism for chairs Kurt R. Heidmann 2001-05-01
6179384 Force adjusting device Kurt R. Heidmann 2001-01-30
6176550 Adjustable armrest for chairs Michel A. Lamart, Arnold B. Dammermann, Glenn A. Knoblock, Robert S. Grooters, John Hanna J. Hasbany 2001-01-23
6168237 Adjustable armrest for chairs Michel A. Lamart, Arnold B. Dammermann, Glenn A. Knoblock, Robert S. Grooters, John Hanna J. Hasbany 2001-01-02
6116695 Chair control having an adjustable energy mechanism Kurt R. Heidmann 2000-09-12
6086153 Chair with reclineable back and adjustable energy mechanism Kurt R. Heidmann 2000-07-11