Granted Patent
Utility
US 6,304,091 · App. 09/248,177
Absolute position sensing by phase shift detection using a variable capacitor
Inventors:
Erik J. Shahoian, Christopher J. Hasser, Bruce M. Schena
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Feb 9, 1999
Inventors
Erik J. Shahoian
Christopher J. Hasser
Bruce M. Schena
Assignee (at issue)
Immersion, LLC
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.