Granted Patent
Utility
US 6,737,546 · App. 10/008,641
Extraction process for recovery of acrylic acid
Inventors:
David R. Wagner, Steve J. Miko
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Nov 13, 2001
Inventors
David R. Wagner
Steve J. Miko
Assignee (at issue)
Lurgi GmbH
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.