Granted Patent
Utility
US 6,610,360 · App. 09/994,922
Buffing diamond-like carbon (DLC) to improve scratch resistance
Inventors:
Rudolph Hugo Petrmichl, Fabio Reis
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Nov 28, 2001
Inventors
Rudolph Hugo Petrmichl
Fabio Reis
Assignee (at issue)
Guardian Industries Corp.
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.