Granted Patent
Utility
US 5,621,016 · App. 08/214,876
Polyisocyanate compositions and low density flexible polyurethane foams produced therewith
Inventors:
Vabilisetti S. Murty, Gabriel Verhelst, Mireille De Witte
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: Mar 16, 1994
Inventors
Vabilisetti S. Murty
Gabriel Verhelst
Mireille De Witte
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.