Granted Patent
Utility
US 6,218,444 · App. 09/518,936
Dispersion polyols for hypersoft polyurethane foam
Inventors:
Stanely L. Hager, Jack R. Reese
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Mar 6, 2000
Inventors
Stanely L. Hager
Jack R. Reese
Assignee (at issue)
Bayer Antwerpen
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.