Granted Patent
Utility
US 6,093,259 · App. 08/952,513
Color development method of metallic titanium and black and colored titanium manufactured by this method
Inventors:
Munetoshi Watanabe, Tsuyoshi Sakaguchi
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Nov 28, 1997
Inventors
Munetoshi Watanabe
Tsuyoshi Sakaguchi
Assignee (at issue)
Sumitomo Sitix 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.