(19)
(11) EP 2 157 212 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.03.2014 Bulletin 2014/11

(43) Date of publication A2:
24.02.2010 Bulletin 2010/08

(21) Application number: 09166155.3

(22) Date of filing: 22.07.2009
(51) International Patent Classification (IPC): 
C25D 3/04(2006.01)
C25D 5/14(2006.01)
C25D 5/36(2006.01)
 C25D 3/06(2006.01)
C25D 5/34(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 30.07.2008 CN 200810303201

(71) Applicants:
  • Shenzhen Futaihong Precision Industry Co., Ltd.
    Shenzhen City, Guangdong Province 518109 (CN)
  • FIH (Hong Kong) Limited
    Cheung Sha Wan Kowloon, Hong Kong (CN)

(72) Inventors:
  • Su, Jong-Yi
    231, Taipei Hsien (TW)
  • Chen, Cheng-Shin
    231, Taipei Hsien (TW)
  • Wang, Ren-Ning
    518109, ShenZhen City (CN)
  • Liu, Bin
    518109, ShenZhen City (CN)

(74) Representative: Craven, Ian 
Urquhart-Dykes & Lord LLP Tower North Central Merrion Way
Leeds LS2 8PA
Leeds LS2 8PA (GB)

   


(54) Surface Treatment Method For Housing


(57) A surface treatment method for housings comprising: providing a metal housing and pre-treating it to be cleaned; electroplating the housing to form a hexavalent chromium coating on the surface of the housing; and electroplating the housing to form a trivalent chromium coating on the hexavalent chromium coating.







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