Granted Patent
Utility
US 5,416,117 · App. 08/202,555
Cyclopropenone derivatives
Inventors:
Ryoichi Ando, Yasuhiro Morinaka, Chizuko Takahashi, Yoshikuni Tamao, Akihiro Tobe
Patented Case
View Patent ↗
Granted: May 16, 1995
Filed: Feb 28, 1994
Inventors
Ryoichi Ando
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.