Granted Patent
Utility
US 5,496,741 · App. 08/227,321
Device and process for increasing analyte concentration in a sorbent
Inventor:
Janusz B. Pawliszyn
Patented Case
View Patent ↗
Granted: Mar 5, 1996
Filed: Apr 14, 1994
Inventor
Janusz B. Pawliszyn
Assignee (at issue)
UNIVERSITY OF WATERLOO
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.