Granted Patent
Utility
US 6,806,010 · App. 09/940,954
Toner containing magnetite particles
Inventor:
Ulrich Meisen
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Aug 28, 2001
Inventor
Ulrich Meisen
Assignee (at issue)
Bayer Aktiengesellschaft
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.