Granted Patent
Utility
US 5,808,087 · App. 08/753,435
Sulfonium salts of pyrrolylbenzimidazoles
Inventors:
Akio Matsunaga, Yuki Mita, Hiroshi Kohno, Hajime Edatsugi, Daiji Iwata
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Nov 25, 1996
Inventors
Akio Matsunaga
Yuki Mita
Hiroshi Kohno
Hajime Edatsugi
Daiji Iwata
Assignee (at issue)
MITSUI CHEMICALS, 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.