Metal treatment – Stock – Carburized or nitrided
Reexamination Certificate
2005-04-12
2005-04-12
Ip, Sikyin (Department: 1742)
Metal treatment
Stock
Carburized or nitrided
C148S226000, C148S230000, C148S231000, C148S318000
Reexamination Certificate
active
06878218
ABSTRACT:
A high strength gear is provided which comprises a base metal of an iron-base alloy, the base metal being carburized or carbonitrided and having a tooth surface, and a coating containing Fe nitride and/or Fe carbonitride, formed on the tooth surface. A method of forming a high strength gear is also provided.
REFERENCES:
patent: 6093263 (2000-07-01), Kobayashi et al.
patent: 05078821 (1993-03-01), None
patent: 08165557 (1996-06-01), None
patent: 10167348 (1998-06-01), None
patent: 2001073072 (2001-03-01), None
Abe Satoshi
Ikeda Masakazu
Katoh Jun
Otani Keizo
Satou Toshiki
Foley & Lardner LLP
Ip Sikyin
Kabushiki Kaisha Kobe Seiko Sho
Nissan Motor Co,. Ltd.
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