Granted Patent
Utility
US 5,397,479 · App. 08/052,504
Composition and method for enrichment of white blood cells from whole human blood
Inventors:
Lawrence Kass, Leonard Spolter
Patented Case
View Patent ↗
Granted: Mar 14, 1995
Filed: Apr 26, 1993
Inventors
Lawrence Kass
Leonard Spolter
Assignee (at issue)
International Remote Imaging Systems, Inc.
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.