Granted Patent
Utility
US 5,763,693 · App. 08/604,622
Process for producing isopropyl alcohol
Inventors:
Shigeru Hirata, Shinji Ogawa
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Feb 21, 1996
Inventors
Shigeru Hirata
Shinji Ogawa
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.