JP

James A. Perkins

SD Steelcase Development: 8 patents #55 of 472Top 15%
Overall (All Time): #662,068 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6905171 Seating unit including novel back construction Glenn A. Knoblock, Larry DeKraker, Kevin A. Ekdahl, Kurt R. Heidmann, Gardner Klaasen +6 more 2005-06-14
6749261 Seating unit including novel back construction Glenn A. Knoblock, Arnold B. Dammermann, Larry DeKraker, Kevin A. Ekdahl, Kurt R. Heidmann +6 more 2004-06-15
6460928 Seating unit including novel back construction Glenn A. Knoblock, Arnold B. Dammermann, Larry DeKraker, Kevin A. Ekdahl, Kurt R. Heidmann +6 more 2002-10-08
6394545 Back for seating unit Glenn A. Knoblock, Arnold B. Dammermann, Larry DeKraker, Kevin A. Ekdahl, Kurt R. Heidmann +6 more 2002-05-28
6394546 Lumbar device Glenn A. Knoblock, Arnold B. Dammermann, Larry DeKraker, Kevin A. Ekdahl, Kurt R. Heidmann +6 more 2002-05-28
6367877 Back for seating unit Glenn A. Knoblock, Arnold B. Dammermann, Larry DeKraker, Kevin A. Ekdahl, Kurt R. Heidmann +6 more 2002-04-09
6349992 Seating unit including novel back construction Glenn A. Knoblock, Arnold B. Dammermann, Larry DeKraker, Kevin A. Ekdahl, Kurt R. Heidmann +6 more 2002-02-26
5975634 Chair including novel back construction Glenn A. Knoblock, Arnold B. Dammermann, Larry DeKraker, Kevin A. Ekdahl, Kurt R. Heidmann +6 more 1999-11-02