Granted Patent
Utility
US 4,585,591 · App. 06/325,026
17.beta.-ethynylsteroids and process for preparing same
Inventors:
Issei Nitta, Shinichiro Fujimori, Toshio Haruyama, Shinya Inoue
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Nov 25, 1981
Inventors
Issei Nitta
Shinichiro Fujimori
Toshio Haruyama
Shinya Inoue
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.