Granted Patent
Utility
US 5,116,426 · App. 07/602,041
Method of cleaning a substrate using a dichloropentafluoropropane
Inventors:
Teruo Asano, Naohiro Watanabe, Kazuki Jinushi, Shunichi Samejima
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Oct 25, 1990
Inventors
Teruo Asano
Naohiro Watanabe
Kazuki Jinushi
Shunichi Samejima
Assignee (at issue)
Asaki Glass Company Ltd.
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.