Granted Patent
Utility
US 4,585,692 · App. 06/621,279
Aliphatic polyurethane matrix transfer medium and porous magnesium silicate filler
Inventors:
David R. Klueh, Benjamin F. Livingston, James F. Martone, Martin Joseph Zutt, Jr.
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Jun 15, 1984
Inventors
David R. Klueh
Benjamin F. Livingston
James F. Martone
Martin Joseph Zutt, Jr.
Assignee (at issue)
International Business Machines Corporation
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.