Granted Patent
Utility
US 4,758,679 · App. 06/887,757
Preparation of 7-(3-(propylamino)-2-hydroxypropoxy)flavone
Inventors:
Hans F. Schmitthenner, Edwin S. C. Wu
Patented Case
View Patent ↗
Granted: Jul 19, 1988
Filed: Jul 18, 1986
Inventors
Hans F. Schmitthenner
Edwin S. C. Wu
Assignee (at issue)
Pennwalt Corporation
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.