Granted Patent
Utility
US 6,448,456 · App. 10/095,881
Process for the preparation of alkylene glycols
Inventors:
Gary R. Strickler, Guo-shuh J. Lee, William J. Rievert, Daniel J. LaPrairie, Edward E. Timm
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Mar 11, 2002
Inventors
Gary R. Strickler
Guo-shuh J. Lee
William J. Rievert
Daniel J. LaPrairie
Edward E. Timm
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.