Granted Patent
Utility
US 4,898,776 · App. 07/273,681
Isocyanate/surfactant-modified polyol binder for manufacture of lignocellulosic composites
Inventors:
Michael G. Israel, George A. Grozdits, Kenneth G. Trout
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Nov 21, 1988
Inventors
Michael G. Israel
George A. Grozdits
Kenneth G. Trout
Assignee (at issue)
Jim Walter Research Corp.
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.