Granted Patent
Utility
US 4,959,376 · App. 07/253,023
1,4-benzodioxane derivatives
Inventors:
Toshinobu Kunii, Norio Minami, Fumihiro Ozaki, Nobuyuki Mori, Mikio Takeda, Hiroshi Katoh
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: Oct 4, 1988
Inventors
Toshinobu Kunii
Norio Minami
Fumihiro Ozaki
Nobuyuki Mori
Mikio Takeda
Hiroshi Katoh
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.