Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470749 | Method and apparatus for pulsed ultrasonic doppler measurement of wall deposition | Wei Han, James R. Birchak, Crispin L. Richards, Vimal V. Shah, Rajnikant M. Amin | 2002-10-29 |
| 6401538 | Method and apparatus for acoustic fluid analysis | Wei Han, James R. Birchak | 2002-06-11 |
| 6378364 | Downhole densitometer | Michael T. Pelletier, Mark A. Proett, James R. Birchak, Thomas Ritter | 2002-04-30 |