Granted Patent
Utility
US 5,618,980 · App. 08/640,022
Method for preparing aromatic secondary amino compound
Inventors:
Teruyuki Nagata, Chiyuki Kusuda, Masaru Wada, Kenichi Satou, Masae Uchida
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: Apr 30, 1996
Inventors
Teruyuki Nagata
Chiyuki Kusuda
Masaru Wada
Kenichi Satou
Masae Uchida
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.