Granted Patent
Utility
US 4,215,206 · App. 05/887,087
Furan binder composition
Inventors:
Richard F. Hanesworth, Young D. Kim, Gary A. Tolhurst
Patented Case
View Patent ↗
Granted: Jul 29, 1980
Filed: Mar 16, 1978
Inventors
Richard F. Hanesworth
Young D. Kim
Gary A. Tolhurst
Assignee (at issue)
Ashland Oil, 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.