Granted Patent
Utility
US 5,276,192 · App. 07/689,388
Preparation of phenoxyethanamines
Inventors:
Wei-Yang Su, George P. Speranza
Patented Case
View Patent ↗
Granted: Jan 4, 1994
Filed: Apr 22, 1991
Inventors
Wei-Yang Su
George P. Speranza
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.