Granted Patent
Utility
US 6,429,236 · App. 09/576,510
Acrylic-modified phenolic-urethane foundry binders
Inventors:
Gary M. Carlson, Robert B. Fechter, Edward Gerard Toplikar, D. Greg Hendershot
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: May 23, 2000
Inventors
Gary M. Carlson
Robert B. Fechter
Edward Gerard Toplikar
D. Greg Hendershot
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.