Granted Patent
Utility
US 6,828,972 · App. 10/131,972
System and method for expression mapping
Inventors:
Zhengyou Zhang, Zicheng Liu, Ying Shan
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Apr 24, 2002
Inventors
Zhengyou Zhang
Zicheng Liu
Ying Shan
Assignee (at issue)
Microsoft 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.