Granted Patent
Utility
US 6,099,798 · App. 08/962,515
Ultraviolet light block and photocatalytic materials
Inventors:
Nobuyuki Kambe, Xiangxin Bi
Patented Case
View Patent ↗
Granted: Aug 8, 2000
Filed: Oct 31, 1997
Inventors
Nobuyuki Kambe
Xiangxin Bi
Assignee (at issue)
NanoGram Corporation
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.