Granted Patent
Utility
US 4,675,307 · App. 06/826,489
Alkali metal-supported catalyst
Inventors:
Katsuo Taniguchi, Tadaaki Fujimoto, Kenji Saeki
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Jan 23, 1986
Inventors
Katsuo Taniguchi
Tadaaki Fujimoto
Kenji Saeki
Assignee (at issue)
Mitsui Petrochemical 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.