Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6936951 | Smart sonic bearings and method for frictional force reduction and switching | Jack Cheng | 2005-08-30 |
| 6724128 | Smart sonic bearings for frictional force reduction and switching | Jack Cheng | 2004-04-20 |