Granted Patent
Utility
US 4,647,677 · App. 06/753,528
Process for preparing 2,3-dihydro-7-aminobenzofurans
Inventors:
Mitsuhiko Tamura, Haruo Katsumata, Takemi Nakanome
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Jul 10, 1985
Inventors
Mitsuhiko Tamura
Haruo Katsumata
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.