Granted Patent
Utility
US 4,940,668 · App. 07/098,370
Method for increasing agglutination of groups of cells to produce improved cell layer interface in centrifuged blood sample
Inventors:
Stephen C. Wardlaw, Robert A. Levine, Rodolfo R. Rodriguez, Michael R. Loken
Patented Case
View Patent ↗
Granted: Jul 10, 1990
Filed: Sep 18, 1987
Inventors
Stephen C. Wardlaw
Robert A. Levine
Rodolfo R. Rodriguez
Michael R. Loken
Assignee (at issue)
BECTON, DICKINSON AND COMPANY
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.