Granted Patent
Utility
US 5,880,175 · App. 08/811,395
Amine cured foundry binder system and their uses
Inventors:
James J. Archibald, Matthew S. Sheridan
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Mar 4, 1997
Inventors
James J. Archibald
Matthew S. Sheridan
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.