Granted Patent
Utility
US 6,080,897 · App. 09/271,435
Method for producing monoethylene glycol
Inventor:
Kazuki Kawabe
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Mar 18, 1999
Inventor
Kazuki Kawabe
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.