Granted Patent
Utility
US 6,525,630 · App. 09/704,850
Microstrip tunable filters tuned by dielectric varactors
Inventors:
Yongfei Zhu, Louise Sengupta, Yu Rong
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Nov 2, 2000
Inventors
Yongfei Zhu
Louise Sengupta
Yu Rong
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.