Granted Patent
Utility
US 6,022,380 · App. 09/126,764
Processes for manufacturing colored hair using color sizing agents and vapor
Inventor:
Toshihiko Satoh
Patented Case
View Patent ↗
Granted: Feb 8, 2000
Filed: Jul 31, 1998
Inventor
Toshihiko Satoh
Assignee (at issue)
ADERANS COMPANY 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.