Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1057852 | Water table | — | 2025-01-14 |
| 8641007 | Exhibiting rack | — | 2014-02-04 |
| 8496295 | Rotary elbow with double shaft | — | 2013-07-30 |
| 8251453 | Adjustable armrest support of chair | — | 2012-08-28 |
| 7980519 | Telescopic adjustable positioning device | — | 2011-07-19 |
| 7735537 | Portable wall-partition | John Hardt, Greg Moore | 2010-06-15 |
| 7198326 | Desk and chair interchangeable device | — | 2007-04-03 |
| 7140306 | Auxiliary table plate device with elevation adjusting device | — | 2006-11-28 |
| D479054 | Chair | — | 2003-09-02 |
| D478734 | Chair | — | 2003-08-26 |
| 6299253 | Telescopic positioning mechanism for chair backrest | — | 2001-10-09 |
| 6213556 | Extendible chair arm | — | 2001-04-10 |
| 6209840 | Mechanism for the relative positioning of chair arm | — | 2001-04-03 |
| D431134 | Table stand | — | 2000-09-26 |
| 6092474 | Computer desk with pneumatic elevation control means | — | 2000-07-25 |
| 5975640 | Adjustable armrest of an office chair | — | 1999-11-02 |
| D390713 | Chair | — | 1998-02-17 |
| D373030 | Chair | — | 1996-08-27 |