Granted Patent
Utility
US 5,901,054 · App. 08/993,297
Pulse-width-modulation control circuit
Inventors:
Ching-Shan Leu, Jeang-Su HWANG, Wueichan Liu
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Dec 18, 1997
Inventors
Ching-Shan Leu
Jeang-Su HWANG
Wueichan Liu
Assignee (at issue)
CHUNG-SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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.