Metal treatment – Process of modifying or maintaining internal physical... – Carburizing or nitriding using externally supplied carbon or...
Reexamination Certificate
2011-03-01
2011-03-01
King, Roy (Department: 1733)
Metal treatment
Process of modifying or maintaining internal physical...
Carburizing or nitriding using externally supplied carbon or...
C148S318000, C455S575100
Reexamination Certificate
active
07896981
ABSTRACT:
A cost effective system, method and apparatus adapted to provide a nitride layer on stainless steel used for the manufacture of consumer electronic products. In addition to providing a durable, hard surface that is both scratch and impact resistant, the nitride layer allows for the natural surface color and texture of the underlying stainless steel to remain visible to the user. It is this natural surface color and texture of the stainless steel that adds to the aesthetically pleasing appearance of the consumer electronic product thereby enhancing the user's overall experience.
REFERENCES:
Maru{hacek over (s)}ić et al., “Modification of carbon steel surface by the Tenifer® process of nitrocarburizing and post-oxidation,” Surface & Coatings Technology 201 (2006) 3415-3421.
Kolsterising® Corrosion resistant surface hardening of austenitic stainless steel, Bodycote product brochure.
Apple Inc.
Beyer Law Group LLP
King Roy
Roe Jessee R.
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