Granted Patent
Utility
US 5,177,254 · App. 07/152,339
Method for producing an unsaturated glycol diester
Inventors:
Junzo Haji, Ichiro Yokotake, Takahiro Yamaguchi, Masato Sato, Nobuyuki Murai
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Feb 4, 1988
Inventors
Junzo Haji
Ichiro Yokotake
Takahiro Yamaguchi
Masato Sato
Nobuyuki Murai
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.