Granted Patent
Utility
US 4,328,129 · App. 06/103,750
Catalyst for making dimethyl ether and methanol from synthesis gas
Inventor:
Yun-Yang Huang
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Dec 14, 1979
Inventor
Yun-Yang Huang
Assignee (at issue)
Ethyl Corporation
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.