Granted Patent
Utility
US 4,882,447 · App. 07/157,969
Novel organic platinum complex and process for the preparation thereof
Inventors:
Kenji Tsujihara, Yoshihisa Arai, Osamu Ohtsuki, Tadashi Nakatani
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Feb 19, 1988
Inventors
Kenji Tsujihara
Yoshihisa Arai
Osamu Ohtsuki
Tadashi Nakatani
Assignee (at issue)
Tanabe Seiyaku Co., Ltd.
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.