Granted Patent
Utility
US 5,900,441 · App. 08/741,413
Process for preparing a flexible polyurethane foam
Inventors:
Mireille De Witte, Eric Huygens, Luc Van Essche, Leo Franciscus Verstrepen
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Oct 29, 1996
Inventors
Mireille De Witte
Eric Huygens
Luc Van Essche
Leo Franciscus Verstrepen
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.