Granted Patent
Utility
US 5,924,499 · App. 08/837,582
Acoustic data link and formation property sensor for downhole MWD system
Inventors:
James R. Birchak, Clarence Gerald Gardner, Kwang Yoo
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Apr 21, 1997
Inventors
James R. Birchak
Clarence Gerald Gardner
Kwang Yoo
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.