Granted Patent
Utility
US 6,552,578 · App. 10/064,082
Power down circuit detecting duty cycle of input signal
Inventors:
Jacky Cheung, Hide Hattori
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Jun 10, 2002
Inventors
Jacky Cheung
Hide Hattori
Assignee (at issue)
Pericom Semiconductor Corporation
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.