Granted Patent
Utility
US 5,604,209 · App. 08/253,274
Synergistic antiviral compositions
Inventors:
Masaru Ubasawa, Satoshi Yuasa
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Jun 2, 1994
Inventors
Masaru Ubasawa
Satoshi Yuasa
Assignee (at issue)
MITSUBISHI CHEMICAL 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.