Granted Patent
Utility
US 5,536,644 · App. 08/353,481
Particle separation method
Inventors:
Edwin F. Ullman, Vartan Ghazarossian, Nurith Kurn, Litai Weng
Patented Case
View Patent ↗
Granted: Jul 16, 1996
Filed: Dec 9, 1994
Inventors
Edwin F. Ullman
Vartan Ghazarossian
Nurith Kurn
Litai Weng
Assignee (at issue)
Behringwerke Aktiengesellschaft
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.