Granted Patent
Utility
US 6,454,847 · App. 09/673,927
Aluminium pigment
Inventors:
Kiyoshi Iri, Atsutoshi SUGIMOTO
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Oct 20, 2000
Inventors
Kiyoshi Iri
Atsutoshi SUGIMOTO
Assignee (at issue)
Asahi Kasei Metals Limited
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.