Granted Patent
Utility
US 5,714,646 · App. 08/568,294
Process for producing isopropyl alcohol
Inventors:
Shigeru Hirata, Shinji Ogawa
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Dec 6, 1995
Inventors
Shigeru Hirata
Shinji Ogawa
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.