Granted Patent
Utility
US 6,284,556 · App. 09/308,271
Diamond surfaces
Inventors:
Wang Nang Wang, Neil Anthony Fox
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Jul 8, 1999
Inventors
Wang Nang Wang
Neil Anthony Fox
Assignee (at issue)
Smiths Group PLC
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.