Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12173793 | Cam-controlled continuously variable transmission systems | — | 2024-12-24 |
| 12000482 | Ring tensioner | — | 2024-06-04 |
| 11898636 | Fixed belt tensioner | Min Chun Hao, David P. Rieland | 2024-02-13 |
| 11421561 | Synchronous belt drive system | Min Gao, Cindy Decker, Carol Weber, Douglas D. Schelhaas, Kevin Ward +9 more | 2022-08-23 |
| 10995829 | Tensioner | — | 2021-05-04 |
| 10989280 | Tensioner | Venkatakrishnan Seshachalam | 2021-04-27 |
| 10968988 | Tensioner | — | 2021-04-06 |
| 8958961 | Continuously variable transmission | — | 2015-02-17 |
| 7815542 | Reverse sprocket transfer case | — | 2010-10-19 |
| 7721701 | Rotary scissors action machine | — | 2010-05-25 |
| 7090606 | Adjustable tensioner | — | 2006-08-15 |
| 6702266 | Damping strut | — | 2004-03-09 |
| 6612408 | Frictional damping strut | Alexander Serkh | 2003-09-02 |
| 6607459 | Linear tensioner | Alexander Serkh, Ali Kanberoglu | 2003-08-19 |
| 6568340 | Motorized wakeboard | Piotr Dec | 2003-05-27 |
| 6361459 | Tensioner | Alexander Serkh, David Hanes | 2002-03-26 |
| 6192817 | Motorized surfboard | Piotr Dec | 2001-02-27 |
| 5073148 | Tensioner with damping system | — | 1991-12-17 |
| 5045029 | Pulley encased tensioner with damping | Henry W. Thomey | 1991-09-03 |