Granted Patent
Utility
US 4,393,000 · App. 06/214,728
Cyclization process for producing aziridine-2-carboxylic acid or its salts
Inventors:
Ryuichi Mita, Chojiro Higuchi, Toshio Kato, Nobuyuki Kawashima, Akihiro Yamaguchi, Shosuke Nagai, Takao Takano
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Dec 9, 1980
Inventors
Ryuichi Mita
Chojiro Higuchi
Toshio Kato
Nobuyuki Kawashima
Akihiro Yamaguchi
Shosuke Nagai
Takao Takano
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.