IP Library › Granted Patent US 6,673,123
Granted Patent Utility
US 6,673,123 · App. 10/171,732

Solid colorant for keratin fibers

Inventors: Erik Schulze zur Wiesche, Detlef Hollenberg, Michael Dreja
Patented Case View Patent ↗
Granted: Jan 6, 2004 Filed: Jun 14, 2002
Inventors
Erik Schulze zur Wiesche
Detlef Hollenberg
Michael Dreja
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA)

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 6,673,123
App. No.
10/171,732
Filed
2002-06-14
Granted
2004-01-06
Kind
B2