Granted Patent
Utility
US 6,652,730 · App. 09/857,013
Aluminum organic electrolytes and method for electrolytic coating with aluminum or aluminum-magnesium-alloys
Inventors:
Herbert Lehmkuhl, Klaus-Dieter Mehler, Bertram Reinhold
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: May 30, 2001
Inventors
Herbert Lehmkuhl
Klaus-Dieter Mehler
Bertram Reinhold
Assignee (at issue)
Studiengesellschaft Kohle gGmbH
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.