Granted Patent
Utility
US 6,387,983 · App. 09/575,916
Foundry mixes containing an aliphatic mercaptan
Inventor:
Michael J. Skoglund
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: May 23, 2000
Inventor
Michael J. Skoglund
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.