Granted Patent
Utility
US 4,948,808 · App. 07/225,278
Guanidinobenzoic ester derivative
Inventors:
Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Jul 28, 1988
Inventors
Shigeru Souda
Naoyuki Shimomura
Norihiro Ueda
Shuhei Miyazawa
Takashi Yamanaka
Kaname Miyamoto
Ieharu Hishinuma
Junichi Nagakawa
Naoko Nagaoka
Hidetoshi Kawashima
Tsutomu Kawata
Junsaku Nagaoka
Tsuneo Wakabayashi
Assignee (at issue)
Eisai Inc.
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.