Granted Patent
Utility
US 6,093,854 · App. 09/418,686
Process for preparing alkanolamines from polyolefin epoxides
Inventors:
Wei-Yang Su, John M. Larkin
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Oct 14, 1999
Inventors
Wei-Yang Su
John M. Larkin
Assignee (at issue)
HUNTSMAN PETROCHEMICAL LLC
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.