Granted Patent
Utility
US 5,391,801 · App. 08/047,021
Hydroformylation process and bisphosphite compound used therein
Inventors:
Keiichi Sato, Yuji Kawaragi, Masaki Takai, Tooru Ookoshi
Patented Case
View Patent ↗
Granted: Feb 21, 1995
Filed: Apr 16, 1993
Inventors
Keiichi Sato
Yuji Kawaragi
Masaki Takai
Tooru Ookoshi
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.