Granted Patent
Utility
US 6,072,022 · App. 09/433,164
Physiological fluid separation vehicles having improved resistance to inward migration of therapeutic agents
Inventors:
William Lawrence O'Brien, Dean A. Oester, Jeffrey A. Barnhorst, Lidia Kupczyk-Subotkowska, John Patrick Fisher
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Nov 3, 1999
Inventors
William Lawrence O'Brien
Dean A. Oester
Jeffrey A. Barnhorst
Lidia Kupczyk-Subotkowska
John Patrick Fisher
Assignee (at issue)
Henkel Limited
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.