Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6854318 | Method and apparatus of nondestructive testing a sealed product for leaks | Guosen Ronald Zhang, Ranajit Ghosh, Xuguang Wang | 2005-02-15 |
| 6584828 | Method and apparatus of nondestructive testing a sealed product for leaks | Guosen Ronald Zhang, Ranajit Ghosh, Xuguang Wang | 2003-07-01 |
| 6308556 | Method and apparatus of nondestructive testing a sealed product for leaks | Guosen Ronald Zhang, Ranajit Ghosh | 2001-10-30 |
| 5861546 | Intelligent gas flow measurement and leak detection apparatus | Guosen Ronald Zhang, Ranajit Ghosh | 1999-01-19 |