Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8894305 | Support accessory for split keyboard | William R. Hargreaves, Mark Shintaro Ando, Carsten Buus | 2014-11-25 |
| 8858103 | Computer keyboard with first and second modules having adjustable angle | William R. Hargreaves, Carsten Buus, Mark Shintaro Ando | 2014-10-14 |
| 8454254 | Support accessory for split keyboard | William R. Hargreaves, Mark Shintaro Ando, Carsten Buus | 2013-06-04 |
| 8289684 | Computer keyboard | William R. Hargreaves, Carsten Buus, Mark Shintaro Ando | 2012-10-16 |
| RE43485 | Keyboard | William R. Hargreaves, Drew Carlson, Mark Shintaro Ando, Jerry Yamamoto, Carsten Buus | 2012-06-26 |
| 7828489 | Keyboard with a pair of pivotable keying modules | William R. Hargreaves, Carsten Buus | 2010-11-09 |