Granted Patent
Utility
US 5,246,779 · App. 07/927,750
Microfine propylene polymer powders and process for their preparation
Inventors:
Manfred Heimberg, Daniel J. Ondrus
Patented Case
View Patent ↗
Granted: Sep 21, 1993
Filed: Aug 10, 1992
Inventors
Manfred Heimberg
Daniel J. Ondrus
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.