Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
CS

Charles A. Seiber — 39 Patents

SDSteelcase Development: 29 patents #3 of 472Top 1%
STSteelcase: 10 patents #95 of 809Top 15%
Palo Alto, CA: #520 of 9,675 inventorsTop 6%
California: #11,767 of 386,348 inventorsTop 4%
Overall (All Time): #83,492 of 4,157,543Top 3%
39 Patents All Time

Issued Patents All Time

Showing 26–39 of 39 patents

Patent #TitleCo-InventorsDate
6134845 Partitions with connecting structure David A. Shipman, Benjamin G. Shaw, Don S. Minami, David D. McClanahan, Robert J. Luchetti +4 more 2000-10-24
6134852 Partition frame construction having wireways and off-module connection David A. Shipman, Benjamin G. Shaw, Don S. Minami, David D. McClanahan, Robert J. Luchetti +4 more 2000-10-24
6098358 Knock-down portable partition system Michael L. Waalkes, Marcus K. Pressnell, Mark T. Slager, Michael R. Shields, Brian J. Kane +10 more 2000-08-08
6079173 Knock-down portable partition system Michael L. Waalkes, Marcus K. Pressnell, Mark T. Slager, Michael R. Shields, Brian J. Kane +4 more 2000-06-27
6044612 Connection system for partitions David A. Shipman, Benjamin G. Shaw, Don S. Minami, David D. McClanahan, Robert J. Luchetti +4 more 2000-04-04
D419799 End panel for a storage unit Jonathan J. King, Kurt P. Dammerman, Thomas B. Eich, Frank Freidman, Thomas Overthun +2 more 2000-02-01
5979118 Expandable and contractible work station Steven C. Gortsema, Thomas B. Eich, David P. Churchill, Frank Freidman, Jonathan J. King +2 more 1999-11-09
5970662 Reconfigurable system for subdividing building space and having minimal footprint Sean M. Corcorran, Robert Peter Arko, Frank Friedman, Leon D. Segal, Jonathan J. King +2 more 1999-10-26
5950386 Partition construction having frame and misaligned covers David A. Shipman, Robert J. Luchetti, Gregg R. Draudt, Phillip M. Hobson, Benjamin G. Shaw +2 more 1999-09-14
5899036 Partition system Benjamin G. Shaw, Christopher O. Lada, Phillip M. Hobson, Robert P. Poppe, David A. Shipman +4 more 1999-05-04
5899035 Knock-down portable partition system Michael L. Waalkes, Mark T. Slager, Brian J. Kane, Marcus K. Pressnell, Michael R. Shields +4 more 1999-05-04
5890325 Reconfigurable system for subdividing building space and having minimal footprint Sean M. Corcorran, Robert Peter Arko, Frank Friedman, Leon D. Segal, Jonathan J. King +2 more 1999-04-06
5746035 Partition system Benjamin G. Shaw, Christopher O. Lada, Phillip M. Hobson, Robert P. Poppe, David A. Shipman +4 more 1998-05-05
5740650 Partition system Benjamin G. Shaw, Christopher O. Lada, Phillip M. Hobson, Robert P. Poppe, David A. Shipman +4 more 1998-04-21