Granted Patent
Utility
US 4,859,832 · App. 07/092,125
Light radiation apparatus
Inventors:
Makoto Uehara, Hajime Ichikawa, Masahiko Yomoto, Shigeru Kato
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Sep 2, 1987
Inventors
Makoto Uehara
Hajime Ichikawa
Masahiko Yomoto
Shigeru Kato
Assignee (at issue)
NIKON 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.