Wenderoth, Lind & Ponack, L.L.P.
Article and code engraving method
An article allows an engraved code to be detected. The engraved code includes a plurality of dot dented portions defined on the article. Each of the dot dented portions has a quadrilateral pyramid shape with a coating layer on a prior stage dented portion having a quadrilateral pyramid shape. Corner dented portions dented at acute angles outward along a diagonal direction are defined at four corner positions of an opening peripheral edge portion of the prior stage dented portion.
HITACHI AUTOMOTIVE SYSTEMS, LTD.
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B41M B23K B23K B41M B23K G06K G06K G06K G06K
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Yasushi Kokichi Takashi Toshiyuki Kazushi
Suzuki Nakayama Murakami Take Imamura