Granted Patent
Utility
US 4,673,762 · App. 06/866,676
Decolorizing ethanolamines with alkylene oxides
Inventors:
James H. Paslean, Charles S. Steele
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: May 27, 1986
Inventors
James H. Paslean
Charles S. Steele
Assignee (at issue)
Texaco Inc.
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.