Granted Patent
Utility
US 5,648,568 · App. 08/460,871
Method for producing a hydrofluorocarbon
Inventors:
Kazuya Oharu, Ryuji Seki, Seisaku Kumai
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Jun 5, 1995
Inventors
Kazuya Oharu
Ryuji Seki
Seisaku Kumai
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.