Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-11-28
2010-06-15
Phan, Thiem (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S846000, C029S848000, C029S874000, C029S876000, C029S881000, C200S302200, C200S314000, C200S341000
Reexamination Certificate
active
07735214
ABSTRACT:
A metallic thin plate is etched to form a plurality of keypads having hollowed portions and cut to form a metallic keypad panel having a predetermined shape. Then, an electroplated layer is coated on the surface of the metallic keypad panel. A layer of protective film is adhered on the non-electroplated surface of the metallic keypad panel, which is disposed in a mold. A plastic material is then injected into the mold, so that the plastic material is formed into a pattern layer. In addition, a plastic thin plate is prepared with one side surface printed with a displaying layer, is adhered on elastic bodies having a plurality of protrusions and is cut to form an elastic layer. Finally, after the protective film is peeled off, an adhesive layer is applied thereon. The elastic layer is adhered on the surface of the adhesive layer.
REFERENCES:
patent: 6196738 (2001-03-01), Shimizu et al.
patent: 6462294 (2002-10-01), Davidson et al.
patent: 2007-115633 (2007-05-01), None
Hsu Chih-Ho
Tsao Kai-Jie
Wu Che-Tung
Chun-Ming Shih
Ichia Technoligies, Inc.
Phan Thiem
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