Granted Patent
Utility
US 5,610,113 · App. 08/574,329
Process for the preparation of .alpha.-tocopherol derivatives, and catalyst
Inventors:
Makoto Matsui, Hisashi Yamamoto
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Dec 18, 1995
Inventors
Makoto Matsui
Hisashi Yamamoto
Assignee (at issue)
Eisai Inc.
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.