Granted Patent
Utility
US 6,080,337 · App. 09/337,826
Iron oxide particles
Inventors:
Nobuyuki Kambe, Xiangxin Bi
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Jun 22, 1999
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.