Granted Patent
Utility
US 5,401,772 · App. 08/154,203
Heteroacetic acid derivatives
Inventors:
Naokata Yokoyama, Gordon N. Walker, Alan J. Main
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Nov 18, 1993
Inventors
Naokata Yokoyama
Gordon N. Walker
Alan J. Main
Assignee (at issue)
Ciba-Geigy
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.