Granted Patent
Utility
US 6,433,056 · App. 08/953,140
Fluidized polymer suspension of hydrophobically modified poly(acetal- or ketal-polyether) polyurethane and polyacrylate
Inventors:
Charles L. Burdick, Arjun C. Sau
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Oct 17, 1997
Inventors
Charles L. Burdick
Arjun C. Sau
Assignee (at issue)
HERCULES LLC
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.