Granted Patent
Utility
US 6,587,703 · App. 09/877,515
System and method for measuring absolute oxygen saturation
Inventors:
Xuefeng Cheng, Xiaorong Xu, Shuoming Zhou, Lai Wang
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Jun 7, 2001
Inventors
Xuefeng Cheng
Xiaorong Xu
Shuoming Zhou
Lai Wang
Assignee (at issue)
Photonify Technologies, 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.