Granted Patent
Utility
US 5,578,732 · App. 08/430,178
Production of 2-(2-pyridylmethylsulfinyl) benzimidazole compounds by selective oxidation in the presence of a vanadium catalyst
Inventors:
Masayasu Kato, Yoshio Toyoshima, Norio Iwano
Patented Case
View Patent ↗
Granted: Nov 26, 1996
Filed: Apr 27, 1995
Inventors
Masayasu Kato
Yoshio Toyoshima
Norio Iwano
Assignee (at issue)
Takeda Chemical Industries 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.