Granted Patent
Utility
US 5,424,325 · App. 08/171,695
Aminoketone derivatives
Inventors:
Ryoichi Ando, Naoko Ando, Hirokazu Masuda, Toshiro Sasaki, Yasuhiro Morinaka, Chizuko Takahashi, Yoshikuni Tamao, Akihiro Tobe
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Dec 22, 1993
Inventors
Ryoichi Ando
Naoko Ando
Hirokazu Masuda
Toshiro Sasaki
Yasuhiro Morinaka
Chizuko Takahashi
Yoshikuni Tamao
Akihiro Tobe
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.