Granted Patent
Utility
US 4,656,192 · App. 06/620,473
Tropolone derivatives, processes for the preparation thereof and the use thereof as anti-tumor agents
Inventor:
Masatoshi Yamato
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Jun 14, 1984
Inventor
Masatoshi Yamato
Assignee (at issue)
MECTA 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.