Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9608519 | Switching converter with adaptive off time control and the method thereof | Tianzhu Zhang | 2017-03-28 |
| 7498569 | Ion trap mass analyzer | — | 2009-03-03 |
| 7141789 | Method and apparatus for providing two-dimensional substantially quadrupole fields having selected hexapole components | Donald J. Douglas, Frank Londry | 2006-11-28 |
| 7045797 | Axial ejection with improved geometry for generating a two-dimensional substantially quadrupole field | Mikhail Sudakov, Donald J. Douglas | 2006-05-16 |
| 6897438 | Geometry for generating a two-dimensional substantially quadrupole field | Mikhail Soudakov, Donald J. Douglas | 2005-05-24 |