Granted Patent
Utility
US 5,422,359 · App. 08/171,692
.alpha.-aminoketone derivatives
Inventors:
Ryoichi Ando, Toshiro Sakaki, Yasuhiro Morinaka, Chizuko Takahashi, Yoshikuni Tamao
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Dec 22, 1993
Inventors
Ryoichi Ando
Toshiro Sakaki
Yasuhiro Morinaka
Chizuko Takahashi
Yoshikuni Tamao
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.