Granted Patent
Utility
US 6,740,662 · App. 10/111,077
Naphthyridine derivatives
Inventors:
Masahiro Iwata, Noriyuki Kawano, Tomofumi Takuwa, Ryota Shiraki, Miki Kobayashi, Makoto Takeuchi
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Apr 19, 2002
Inventors
Masahiro Iwata
Noriyuki Kawano
Tomofumi Takuwa
Ryota Shiraki
Miki Kobayashi
Makoto Takeuchi
Assignee (at issue)
Yamanouchi 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.