Granted Patent
Utility
US 5,106,605 · App. 07/599,297
Color restored radiation discolored salt compositons and methods for color restoration
Inventor:
Sten-Borje Lindqvist
Patented Case
View Patent ↗
Granted: Apr 21, 1992
Filed: Oct 17, 1990
Inventor
Sten-Borje Lindqvist
Assignee (at issue)
Gambro AB
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.