Granted Patent
Utility
US 6,538,603 · App. 09/621,183
Phased array antennas incorporating voltage-tunable phase shifters
Inventors:
Shuguang Chen, Daniel F. DiFonzo, Ernest Ekelman
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Jul 21, 2000
Inventors
Shuguang Chen
Daniel F. DiFonzo
Ernest Ekelman
Assignee (at issue)
Paratek Microwave, 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.