Granted Patent
Utility
US 5,336,731 · App. 08/066,359
Fractional melt flow rate polymer powders and process for their preparation
Inventors:
Daniel J. Ondrus, Manfred Heimberg
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: May 21, 1993
Inventors
Daniel J. Ondrus
Manfred Heimberg
Assignee (at issue)
Quantum Chemical 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.