Granted Patent
Utility
US 5,654,483 · App. 08/575,091
Process for producing alkoxy-substituted triphenylamines
Inventors:
Chiyuki Kikuchi, Hiroshi Naruse, Masaru Wada, Teruyuki Nagata
Patented Case
View Patent ↗
Granted: Aug 5, 1997
Filed: Dec 19, 1995
Inventors
Chiyuki Kikuchi
Hiroshi Naruse
Masaru Wada
Teruyuki Nagata
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.