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 26–46 of 46 patents

Patent #TitleCo-InventorsDate
D420523 Chair William E. Stumpf, Rodney C. Schoenfelder, Carolyn Maalouf 2000-02-15
6019338 Tilt stand for desktop terminal Michael Brown, Ernest R. Dynie, John I. Johnson 2000-02-01
5772282 Tilt control mechanism for a chair William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller, Timothy P. Coffield, Randy J. Sayers +4 more 1998-06-30
5765804 Pneumatic support colunm for a chair William E. Stumpf, Rodney C. Schoenfelder, George A. Miles 1998-06-16
D386023 Seat and back unit for a chair William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller 1997-11-11
D377431 Seat and back unit for a chair William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller 1997-01-21
D346279 Chair William E. Stumpf, Rodney C. Schoenfelder, Carolyn Keller 1994-04-26
D346282 Side chair Jeffrey S. Wilcox, Keith A. McDowell, Peter F. Bemis 1994-04-26
D344649 Chair spine Jeffrey S. Wilcox, Keith A. McDowell, Peter F. Bemis 1994-03-01
D318577 Chair Peter Glass 1991-07-30
4889385 Chair seat-and-back support Peter Glass 1989-12-26
D299192 Chair William E. Stumpf 1989-01-03
D296623 Stool or similar article William E. Stumpf 1988-07-12
D296394 Chair William E. Stumpf 1988-06-28
D295347 Chair William E. Stumpf 1988-04-26
4718716 Reclining chair William E. Stumpf, Bruce R. Gezon 1988-01-12
D289120 Chair shell William E. Stumpf 1987-04-07
4533791 Input/output device arrangements for terminals Clifford D. Read, William D. Sawyer 1985-08-06
4529247 One-piece shell chair William E. Stumpf 1985-07-16
4453689 Adjustable mounting Warren K. Ellis 1984-06-12
D265311 Telephone display set base Clifford D. Read 1982-07-06