Granted Patent
Utility
US 6,506,260 · App. 09/532,197
Method for cleaning photovoltaic module and cleaning apparatus
Inventors:
Masafumi Hiraishi, Masataka Kondo, Hideo Yamagishi, Katsuhiko Hayashi, Toshihide Okatsu
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Mar 22, 2000
Inventors
Masafumi Hiraishi
Masataka Kondo
Hideo Yamagishi
Katsuhiko Hayashi
Toshihide Okatsu
Assignee (at issue)
KANEKA 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.