Granted Patent
Utility
US 4,675,105 · App. 06/872,632
System for obtaining a homogeneous absorbent bed in a chromatographic column
Inventors:
Charles W. Martin, Yehuda Shalon
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Jun 10, 1986
Inventors
Charles W. Martin
Yehuda Shalon
Assignee (at issue)
HT Chemicals, 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.