Granted Patent
Utility
US 6,191,327 · App. 08/157,429
Method for producing dichloropentafluoropropanes
Inventors:
Shinsuke Morikawa, Keiichi Ohnishi, Hidekazu Okamoto, Toshihiro Tanuma
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Nov 26, 1993
Inventors
Shinsuke Morikawa
Keiichi Ohnishi
Hidekazu Okamoto
Toshihiro Tanuma
Assignee (at issue)
ASAHI GLASS CO., 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.