Granted Patent
Utility
US 5,484,511 · App. 08/296,570
Process for the removal of impurities from hydrazine hydrate
Inventors:
Wolfgang Ohlendorf, Michael Batz, Hans-Heinrich Moretto, Peter C. Schmidt, Gerhard Jonas
Patented Case
View Patent ↗
Granted: Jan 16, 1996
Filed: Aug 26, 1994
Inventors
Wolfgang Ohlendorf
Michael Batz
Hans-Heinrich Moretto
Peter C. Schmidt
Gerhard Jonas
Assignee (at issue)
Bayer Aktiengesellschaft
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.