Granted Patent
Utility
US 6,535,877 · App. 09/638,892
Pattern recognition apparatus
Inventor:
Hiroshi Hirayama
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Aug 16, 2000
Inventor
Hiroshi Hirayama
Assignee (at issue)
NEC 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.