Granted Patent
Utility
US 4,883,688 · App. 07/215,020
Method for producing chromatographic devices having modified edges
Inventors:
Thomas Houts, Edwin F. Ullman
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Jul 5, 1988
Inventors
Thomas Houts
Edwin F. Ullman
Assignee (at issue)
Syntex (U.S.A.) LLC
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.