DC

Donald Chadwick

HM Herman Miller: 24 patents #9 of 427Top 3%
KN Knoll: 6 patents #29 of 268Top 15%
AS American Seating: 4 patents #11 of 53Top 25%
HC Hanssem Co.: 4 patents #1 of 5Top 20%
HU Humanscale: 4 patents #16 of 71Top 25%
Nortel Networks Limited: 4 patents #772 of 5,294Top 15%
📍 Los Angeles, CA: #127 of 12,377 inventorsTop 2%
🗺 California: #9,121 of 386,348 inventorsTop 3%
Overall (All Time): #63,358 of 4,157,543Top 2%
46
Patents All Time

Issued Patents All Time

Showing 1–25 of 46 patents

Patent #TitleCo-InventorsDate
D756139 Stool Jeffrey Koffman, Todd Bruner, Gregory P. Allison 2016-05-17
D745287 Stool Jeffrey Koffman, Todd Brunner, Gregory P. Allison 2015-12-15
D740578 Stool Jeffrey Koffman, Todd Brunner, Gregory P. Allison 2015-10-13
D740041 Stool Jeffrey Koffman, Todd Brunner, Gregory P. Allison 2015-10-06
8480171 Office chair Arkady Golynsky, Robert A. Melhuish, Hendrik R. van Hekken, Ron Watson 2013-07-09
7887131 Lumbar support Arkady Golynsky, Robert A. Melhuish, Hendrik R. van Hekken, Ron Watson 2011-02-15
D607661 Chair 2010-01-12
D606771 Chair 2009-12-29
7594700 Contoured seating structure William E. Stumpf, Rodney C. Schoenfelder, Carolyn Maalouf, Timothy P. Coffield, Randy J. Sayers +2 more 2009-09-29
6966604 Chair with a linkage assembly William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +4 more 2005-11-22
D510202 Adjustable chair Francisco Romero 2005-10-04
D495890 Stackable chair Francisco Romero, James Shen 2004-09-14
6733080 Seating structure having a backrest with a flexible membrane and a moveable armrest William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +2 more 2004-05-11
6726286 Seating structure having a fabric with a weave pattern William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy U. Sayers +2 more 2004-04-27
6722741 Seating structure having a backrest with a bowed section William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +2 more 2004-04-20
6702390 Support assembly for a seating structure William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +2 more 2004-03-09
D482215 Table Julien Egger 2003-11-18
D479053 Chair Julien Egger 2003-09-02
6588842 Backrest William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +2 more 2003-07-08
D475544 Chair Francisco Romero 2003-06-10
D471024 Chair Francisco Romero 2003-03-04
6386634 Office chair William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +4 more 2002-05-14
6125521 Process for making an office chair William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +2 more 2000-10-03
6059368 Office chair William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +2 more 2000-05-09
6035901 Woven fabric membrane for a seating surface William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +2 more 2000-03-14