Granted Patent
Utility
US 5,834,462 · App. 08/397,254
Tricyclic heterocyclic sulfonamide and sulfonic ester derivatives
Inventors:
Hiroshi Yoshino, Norihiro Ueda, Jun Niijima, Toru Haneda, Yoshihiko Kotake, Kentaro Yoshimatsu, Tatsuo Watanabe, Takeshi Nagasu, Naoko Tsukahara, Nozomu Koyanagi, Kyosuke Kitoh
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Mar 23, 1995
Inventors
Hiroshi Yoshino
Norihiro Ueda
Jun Niijima
Toru Haneda
Yoshihiko Kotake
Kentaro Yoshimatsu
Tatsuo Watanabe
Takeshi Nagasu
Naoko Tsukahara
Nozomu Koyanagi
Kyosuke Kitoh
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.