Granted Patent
Utility
US 4,390,737 · App. 06/316,781
Process for the ortho-alkylation of phenolic compounds
Inventors:
Akihide Kudoh, Motoo Kawamata, Kazushi Ohshima, Makoto Kotani, Takeshi Tsuda, Satoshi Morita
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Oct 30, 1981
Inventors
Akihide Kudoh
Motoo Kawamata
Kazushi Ohshima
Makoto Kotani
Takeshi Tsuda
Satoshi Morita
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.