Granted Patent
Utility
US 4,910,148 · App. 07/130,912
Magnetic separation of magnetized particles from biological fluids
Inventors:
Otto Sorensen, Gunnar Kvalheim, Eivind Siem
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Dec 10, 1987
Inventors
Otto Sorensen
Gunnar Kvalheim
Eivind Siem
Assignee (at issue)
Dynal AS
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.