Granted Patent
Utility
US 5,336,653 · App. 07/970,867
Catalyst for asymmetric synthesis
Inventors:
Masakatsu Shibasaki, Hiroaki Sasai
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: Nov 3, 1992
Inventors
Masakatsu Shibasaki
Hiroaki Sasai
Assignee (at issue)
Chisso 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.