Granted Patent
Utility
US 6,743,516 · App. 09/921,303
Highly durable hydrophobic coatings and methods
Inventors:
Nestor P. Murphy, Rudolph Hugo Petrmichl
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Aug 3, 2001
Inventors
Nestor P. Murphy
Rudolph Hugo Petrmichl
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.