Granted Patent
Utility
US 6,231,985 · App. 09/314,420
Heat and radio frequency-curable two-pack soy protein-based polyurethane adhesive compositions
Inventors:
Gang Chen, David Day, David Jones
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: May 18, 1999
Inventors
Gang Chen
David Day
David Jones
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.