US Patent No. 9,185,835

TECHNIQUES FOR MARKING PRODUCT HOUSINGS


Patent No. 9,185,835
Issue Date November 10, 2015
Title Techniques For Marking Product Housings
Inventorship Richard Walter Heley, Palo Alto, CA (US)
Erming Luo, Cupertino, CA (US)
Adam Mittleman, San Fancisco, CA (US)
John Payne, San Jose, CA (US)
Tang Yew Tan, San Francisco, CA (US)
Erik Wang, Redwood City, CA (US)
Assignee Apple Inc., Cupertino, CA (US)

Claim of US Patent No. 9,185,835

1. A method for depositing material to selected regions of an electronic device housing, said method comprising:
adhering a photoresist layer to a housing surface of the electronic device housing;
positioning a masking film over the photoresist layer that is adhered to the housing surface, the masking film including a
predetermined pattern;

exposing the masking film and the photoresist layer to radiation, thereby exposing a portion of the photoresist layer in accordance
with the predetermined pattern;

removing the masking film from proximity of the photoresist layer;
removing the portion of the photoresist layer that has been exposed;
depositing a layer of material onto the housing surface, the layer of material being provided on the housing surface where
the portion of the photoresist layer has been removed and being provided on a remaining portion of the photoresist layer;
and

removing the remaining portion of the photoresist layer and the portion of the layer of material provided on the remaining
portion of the photoresist layer, thereby retaining the layer of material on the housing surface in accordance with the predetermined
pattern,

wherein the layer of material is a layer of metal, and
wherein the layer of material retained on the housing surface in accordance with the predetermined pattern serves to mark
the housing surface of the electronic device housing.