The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
Jan. 08, 2018
Hongfujin Precision Electronics (Chengdu) Co., Ltd., Chengdu, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Xiao-Gang Peng, Shenzhen, CN;
Kai Fang, Shenzhen, CN;
Yong-De Pei, Shenzhen, CN;
Cheng-Bin Bai, Shenzhen, CN;
Wei Liu, Shenzhen, CN;
Qi Wang, Shenzhen, CN;
HONGFUJIN PRECISION ELECTRONICS (CHENGDU) Co., Ltd., Chengdu, CN;
HON HAI PRECISION INDUSTRY CO., LTD., New Taipei, TW;
Abstract
A surface treatment process for a metal article provides a uniform and unblemished surface finish to the metal article. The surface treatment process anodizes the metal article to form an anodic oxide layer on a surface, and the metal article is activated using a pre-dyeing solution. The pre-dyeing solution contains complex organic acid and sodium acetate. The anodic oxide layer of the metal article is dyed for color and the dyed anodic oxide layer of the metal article is finally sealed.