Granted Patent
Utility
US 5,166,120 · App. 07/710,205
Cylindrically formed catalyst for the oxychlorination of ethylene
Inventors:
Klaus Deller, Helmfried Krause, Ludwig Schmidhammer, Willibald Dafinger
Patented Case
View Patent ↗
Granted: Nov 24, 1992
Filed: Jun 6, 1991
Inventors
Klaus Deller
Helmfried Krause
Ludwig Schmidhammer
Willibald Dafinger
Assignees (at issue)
Degussa AG
WACKER CHEMIE AG
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.