Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9696766 | Double-jointed hinge for computer keyboard | — | 2017-07-04 |
| 9625943 | Mobile keyboard | — | 2017-04-18 |
| 8406085 | Swim device | — | 2013-03-26 |
| 8235074 | Pope and pipe fittings | — | 2012-08-07 |
| 8196735 | Trash-and-recyclables collection and lowering system | — | 2012-06-12 |
| 7814882 | Rotary piston engine | — | 2010-10-19 |
| 7661396 | Actuation subsystem of variable compression ratio control system for internal combustion engine | — | 2010-02-16 |
| 7357226 | Elevator system with multiple cars in the same hoistway | — | 2008-04-15 |
| 7178324 | External combustion engine | — | 2007-02-20 |
| 7174865 | Engine with a variable compression ratio | — | 2007-02-13 |
| 7007640 | Engine with a variable compression ratio | — | 2006-03-07 |
| 6457452 | Mechanism for interconnecting first-and second-shafts of variable speed rotation to a third shaft | — | 2002-10-01 |
| 6457451 | Rotary piston engine | — | 2002-10-01 |
| 6446595 | Rotary piston engine | — | 2002-09-10 |
| 5936556 | Keyboard for inputting to computer means | — | 1999-08-10 |
| 5699879 | Elevator system | — | 1997-12-23 |
| 5663538 | Elevator control system | — | 1997-09-02 |
| 5584364 | Elevator system | — | 1996-12-17 |
| 5419414 | Elevator system with multiple cars in the same hoistway | — | 1995-05-30 |
| 5405300 | Mechanism for intermittent rotation of first and second shafts and continuous rotation of a third shaft | — | 1995-04-11 |
| 5381766 | Rotary piston engine | — | 1995-01-17 |
| 5257194 | Highway traffic signal local controller | — | 1993-10-26 |
| 5152254 | Internal combustion engine for vehicles | — | 1992-10-06 |
| 5133317 | Rotary piston engine | — | 1992-07-28 |
| 4901694 | Rotary engine | — | 1990-02-20 |