Granted Patent
Utility
US 5,357,797 · App. 08/125,499
Method and apparatus for correcting MWD porosity measurement
Inventors:
Voldi E. Maki, Jr., Michael Gärtner
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Sep 22, 1993
Inventors
Voldi E. Maki, Jr.
Michael Gärtner
Assignee (at issue)
Halliburton Logging 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.