Granted Patent
Utility
US 4,684,449 · App. 06/932,333
Process for producing m-hydroxybenzyl alcohol
Inventors:
Shinji Takenaka, Ryu Oi, Chitoshi Shimakawa
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Nov 19, 1986
Inventors
Shinji Takenaka
Ryu Oi
Chitoshi Shimakawa
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.