Granted Patent
Utility
US 4,906,794 · App. 07/308,476
Lysosome liberation inhibitors and histamine release inhibitors
Inventors:
Kohei Umezu, Koichiro Hirayama, Kazuo Suzuki
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Feb 10, 1989
Inventors
Kohei Umezu
Koichiro Hirayama
Kazuo Suzuki
Assignee (at issue)
Mitsubishi Kasei 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.