Granted Patent
Utility
US 6,470,749 · App. 09/851,509
Method and apparatus for pulsed ultrasonic doppler measurement of wall deposition
Inventors:
Wei Han, James R. Birchak, Crispin L. Richards, Vimal V. Shah, Bruce H. Storm, Jr., Rajnikant M. Amin
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: May 8, 2001
Inventors
Wei Han
James R. Birchak
Crispin L. Richards
Vimal V. Shah
Bruce H. Storm, Jr.
Rajnikant M. Amin
Assignee (at issue)
Halliburton Energy Services, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.