Granted Patent
Utility
US 6,602,931 · App. 09/911,677
Polyurethane-forming binders
Inventors:
Chia-Hung Chen, Jorg Kroker
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Jul 24, 2001
Inventors
Chia-Hung Chen
Jorg Kroker
Assignee (at issue)
Ashland, Inc.
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.