Granted Patent
Utility
US 5,604,217 · App. 08/463,353
7-acyl-3-(substituted carbamoyloxy) cephem compounds and process for their preparation
Inventors:
Shigeto Negi, Motosuke Yamanaka, Kanemasa Katsu, Isao Sugiyama, Yuuki Komatu, Atsushi Kamata, Akihiko Tsuruoka, Yoshimasa Machida
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Jun 5, 1995
Inventors
Shigeto Negi
Motosuke Yamanaka
Kanemasa Katsu
Isao Sugiyama
Yuuki Komatu
Atsushi Kamata
Akihiko Tsuruoka
Yoshimasa Machida
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.