Granted Patent
Utility
US 4,033,963 · App. 05/613,336
Naphthoquinone derivatives
Inventor:
Bansi Lal Kaul
Patented Case
View Patent ↗
Granted: Jul 5, 1977
Filed: Sep 15, 1975
Inventor
Bansi Lal Kaul
Assignee (at issue)
Sandoz AG
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.