Granted Patent
Utility
US 6,370,421 · App. 09/607,901
Density modulated catheter for use in fluoroscopy based 3-D neural navigation
Inventors:
James Williams, Arun Krishnan, Ali Bani-Hashemi
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Jun 30, 2000
Inventors
James Williams
Arun Krishnan
Ali Bani-Hashemi
Assignee (at issue)
Siemens Corporate Research, 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.