Granted Patent
Utility
US 5,621,149 · App. 08/436,784
Process for preparing functionalized initiators for anionic polymerization
Inventors:
James A. Schwindeman, Eric John Granger, John F. Engel, Conrad W. Kamienski
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: May 8, 1995
Inventors
James A. Schwindeman
Eric John Granger
John F. Engel
Conrad W. Kamienski
Assignee (at issue)
FMC 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.