Granted Patent
Utility
US 5,506,243 · App. 08/233,963
Sulfonamide derivatives
Inventors:
Ryoichi Ando, Toshiro Sakaki, Chizuko Takahashi, Yoshiyuki Fujimura
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Apr 28, 1994
Inventors
Ryoichi Ando
Toshiro Sakaki
Chizuko Takahashi
Yoshiyuki Fujimura
Assignee (at issue)
Mitsubishi Kasei Corporation
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.