Granted Patent
Utility
US 6,797,668 · App. 10/014,027
Exhaust gas purifying catalyst
Inventor:
Tatsuya Yoshikawa
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Dec 10, 2001
Inventor
Tatsuya Yoshikawa
Assignees (at issue)
ICT Co., Ltd.
International Catalyst Technology, Inc.
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.