Granted Patent
Utility
US 5,349,072 · App. 08/085,805
Staged epoxidation of propylene with recycle
Inventors:
Kyle Preston, Chung-Nan T. Wu, Mark E. Taylor, Mark A. Mueller
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Jul 6, 1993
Inventors
Kyle Preston
Chung-Nan T. Wu
Mark E. Taylor
Mark A. Mueller
Assignee (at issue)
Texaco Chemical 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.