Granted Patent
Utility
US 4,450,246 · App. 06/436,814
Novel polyurethane catalysts in polyurethane foam process
Inventor:
Felek Jachimowicz
Patented Case
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Granted: May 22, 1984
Filed: Oct 26, 1982
Inventor
Felek Jachimowicz
Assignee (at issue)
W. R. Grace & Co.
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.