Granted Patent
Utility
US 5,523,481 · App. 08/347,660
Process for the preparation of dialkyl dicarbonates
Inventors:
Michael Pies, Helmut Fiege, Josef Kasbauer, Gebhard Merz
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Dec 1, 1994
Inventors
Michael Pies
Helmut Fiege
Josef Kasbauer
Gebhard Merz
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.