Granted Patent
Utility
US 5,194,606 · App. 07/734,490
Preparation process of aminoketones
Inventors:
Akira Matsubara, Kazuya Sakai, Hideki Tanada, Hironori Komatsu
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Jul 23, 1991
Inventors
Akira Matsubara
Kazuya Sakai
Hideki Tanada
Hironori Komatsu
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.