Granted Patent
Utility
US 6,013,695 · App. 09/163,589
Foundry binders containing modified polyisocyanates
Inventors:
Michael J. Skoglund, Jeffery Dale Ungerer
Patented Case
View Patent ↗
Granted: Jan 11, 2000
Filed: Sep 30, 1998
Inventors
Michael J. Skoglund
Jeffery Dale Ungerer
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.