Granted Patent
Utility
US 5,689,012 · App. 08/683,356
Continuous preparation of low unsaturation polyoxyalkylene polyether polyols with continuous additon of starter
Inventors:
Jose F. Pazos, T. Thomas Shih
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Jul 18, 1996
Inventors
Jose F. Pazos
T. Thomas Shih
Assignee (at issue)
Arco Chemical Technology, L.P.
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.