Granted Patent
Utility
US 5,817,669 · App. 08/765,232
Compounds, processes for the preparation thereof and anti-tumor agents
Inventors:
Kyoji Tomita, Katsumi Chiba, Shigeki Kashimoto, Koh-ichiro Shibamori, Yasunori Tsuzuki
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Dec 13, 1996
Inventors
Kyoji Tomita
Katsumi Chiba
Shigeki Kashimoto
Koh-ichiro Shibamori
Yasunori Tsuzuki
Assignee (at issue)
Dainippon Pharmaceutical 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.