Granted Patent
Utility
US 6,023,497 · App. 09/051,899
Apparatus for detecting foreign matter with high selectivity and high sensitivity by image processing
Inventors:
Yoshifumi Takahashi, Ken Shioiri
Patented Case
View Patent ↗
Granted: Feb 8, 2000
Filed: Apr 17, 1998
Inventors
Yoshifumi Takahashi
Ken Shioiri
Assignee (at issue)
ANRITSU 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.