Granted Patent
Utility
US 5,155,130 · App. 07/595,153
Certain benzopyran and benzothiopyran derivatives
Inventors:
James L. Stanton, Yoshitaka Satoh, Alan Hutchison
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Oct 10, 1990
Inventors
James L. Stanton
Yoshitaka Satoh
Alan Hutchison
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.