Granted Patent
Utility
US 5,689,011 · App. 08/443,665
Process for the production of glyoxals and catalysts therefor
Inventors:
Kazuo Wakimura, Kazuhuyu Sudoh, Masao Tanaka, Hatuo Inoue, Nobuhisa Iwane
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: May 18, 1995
Inventors
Kazuo Wakimura
Kazuhuyu Sudoh
Masao Tanaka
Hatuo Inoue
Nobuhisa Iwane
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.