Granted Patent
Utility
US 4,560,807 · App. 06/604,943
Process for the production of dimethyl ether useful as a propellant
Inventors:
Nobuyuki Murai, Kazuya Nakamichi, Masayuki Otake, Takashi Ushikubo
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Apr 27, 1984
Inventors
Nobuyuki Murai
Kazuya Nakamichi
Masayuki Otake
Takashi Ushikubo
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.