IP Library › Granted Patent US 6,679,934
Granted Patent Utility
US 6,679,934 · App. 09/795,947

Nitrided valve metals and processes for making the same

Inventors: Bhamidipaty K. D. P. Rao, Shi Yuan
Patented Case View Patent ↗
Granted: Jan 20, 2004 Filed: Feb 28, 2001
Inventors
Bhamidipaty K. D. P. Rao
Shi Yuan
Assignee (at issue)
Cabot Corporation

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 6,679,934
App. No.
09/795,947
Filed
2001-02-28
Granted
2004-01-20
Kind
B2