Granted Patent
Utility
US 6,696,531 · App. 10/368,194
Process for preparing a polymer from 3,4-epoxy-1-butene
Inventors:
Helmut Greiving, Peter Miller
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Feb 18, 2003
Inventors
Helmut Greiving
Peter Miller
Assignee (at issue)
Bayer Polymers LLC
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.