Granted Patent
Utility
US 5,560,852 · App. 08/408,507
Use of 4H-3,1-benzoxazin-4-one compounds to improve the light fastness of textile materials
Inventor:
Jean-Luc Mura
Patented Case
View Patent ↗
Granted: Oct 1, 1996
Filed: Mar 22, 1995
Inventor
Jean-Luc Mura
Assignee (at issue)
Sandoz AG
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.