Granted Patent
Utility
US 5,321,833 · App. 07/574,828
Adaptive ranking system for information retrieval
Inventors:
Shih-Chio Chang, Anita Chow, Min Du
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Aug 29, 1990
Inventors
Shih-Chio Chang
Anita Chow
Min Du
Assignee (at issue)
GTE Laboratories Incorporated
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.