Granted Patent
Utility
US 5,950,702 · App. 08/834,462
Consumable pattern coating for lost foam castings
Inventors:
Lian S. Tan, Teresa A. DeLong, Ruth A. Bambauer
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Apr 11, 1997
Inventors
Lian S. Tan
Teresa A. DeLong
Ruth A. Bambauer
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.