Granted Patent
Utility
US 5,631,257 · App. 08/487,697
Benzoxazole derivatives
Inventors:
Katsuyoshi Iwamatsu, Yasuo Sato, Masaaki Izumi, Fukio Konno, Seiji Shibahara, Shigeharu Inoye, Koichi Shudo, Kazuko Amano
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Jun 7, 1995
Inventors
Katsuyoshi Iwamatsu
Yasuo Sato
Masaaki Izumi
Fukio Konno
Seiji Shibahara
Shigeharu Inoye
Koichi Shudo
Kazuko Amano
Assignees (at issue)
MEIJI SEIKA KAISHA, LTD.
Koichi Shudo
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.