Granted Patent
Utility
US 5,457,255 · App. 08/248,530
Catalysts for hydrogenolytic dealkylation and use thereof
Inventors:
Fumio Kumata, Toshihiko Masuda, Iwao Ueda
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: May 24, 1994
Inventors
Fumio Kumata
Toshihiko Masuda
Iwao Ueda
Assignee (at issue)
Mitsubishi Oil Co., Ltd.
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.