Granted Patent
Utility
US 4,410,747 · App. 06/276,351
Process for producing 1,2-dichloroethane
Inventors:
Tsunekazu Akiyama, Tetsuaki Kihara, Kazunaga Komizo, Hiroshi Kameo
Patented Case
View Patent ↗
Granted: Oct 18, 1983
Filed: Jun 11, 1981
Inventors
Tsunekazu Akiyama
Tetsuaki Kihara
Kazunaga Komizo
Hiroshi Kameo
Assignee (at issue)
Ryo-Nichi Co., 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.