Granted Patent
Utility
US 4,900,843 · App. 07/200,615
Method for dimerization of aromatic halide compounds
Inventors:
Mitsumasa Kitai, Yoshio Katsuro, Shigenori Kawamura, Masumi Hino, Keiichi Sato
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: May 31, 1988
Inventors
Mitsumasa Kitai
Yoshio Katsuro
Shigenori Kawamura
Masumi Hino
Keiichi Sato
Assignee (at issue)
Mitsubishi 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.