Granted Patent
Utility
US 5,952,335 · App. 08/952,778
Fused polycyclic heterocycle derivatives
Inventors:
Hiroyuki Sugumi, Jun Niijima, Yoshihiko Kotake, Toshimi Okada, Jun-ichi Kamata, Kentaro Yoshimatsu, Takeshi Nagasu, Katsuji Nakamura, Toshimitsu Uenaka, Atsumi Yamaguchi, Hiroshi Yoshino, Nozomu Koyanagi, Kyosuke Kito
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Nov 26, 1997
Inventors
Hiroyuki Sugumi
Jun Niijima
Yoshihiko Kotake
Toshimi Okada
Jun-ichi Kamata
Kentaro Yoshimatsu
Takeshi Nagasu
Katsuji Nakamura
Toshimitsu Uenaka
Atsumi Yamaguchi
Hiroshi Yoshino
Nozomu Koyanagi
Kyosuke Kito
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.