Granted Patent
Utility
US 4,594,438 · App. 06/663,570
Process for preparing 2,2-dimethyl-2,3-dihydro-7-hydroxybenzofuran
Inventors:
Naoshi Imaki, Takemi Nakanome
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Oct 22, 1984
Inventors
Naoshi Imaki
Takemi Nakanome
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.