Granted Patent
Utility
US 6,012,316 · App. 08/924,661
Process for increasing the lifespan of dental components
Inventors:
Gerlinde Lange, Franz Josef Grau
Patented Case
View Patent ↗
Granted: Jan 11, 2000
Filed: Sep 5, 1997
Inventors
Gerlinde Lange
Franz Josef Grau
Assignee (at issue)
Degussa AG
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.