Patents by Inventor Hong-Hai Xu

Hong-Hai Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD FOR CLEANING ALUMINUM ARTICLES
    Publication number: 20090056740
    Abstract: A method for cleaning aluminum article includes steps of first water washing for a aluminum article; cleaning the aluminum article with mildly alkaline solution which including phosphate, carbonate and silicate; and second water washing for the aluminum article.
    Type: Application
    Filed: December 27, 2007
    Publication date: March 5, 2009
    Applicants: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., SUTECH TRADING LIMITED
    Inventors: HONG-HAI XU, JIANG-RONG DING
  • Surface treatment process for metal articles
    Patent number: 7462249
    Abstract: A surface treatment process for a metal article includes the following steps. Firstly, a metal article, made of at least one of copper and an alloy thereof, is provided. Secondly, a surface of the metal article is degreased. Thirdly, the surface of the metal article is activated in an acid solution. Finally, the surface of the metal article is deactivated by submersion in an antioxidant agent.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: December 9, 2008
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., Sutech Trading Limited
    Inventors: Jiang-Rong Ding, Zheng-Jiang Ren, Hong-Hai Xu
  • METAL CLEANING AGENT AND METHOD FOR CLEANING METAL PARTS
    Publication number: 20080223416
    Abstract: A cleaning agent for metal parts (e.g., steel articles) includes sodium hydroxide in an approximate amount of 15 wt % (percent by weight) to 25 wt %, sodium tripolyphosphate in an approximate amount of 6 wt % to 9 wt %, sodium metasilicate in an approximate amount of 48 wt % to 51 wt %, sodium dodecyl benzene sulfonate in an approximate amount of 2 wt % to 5 wt %, sodium carbonate in an approximate amount of 8 wt % to 11 wt %, and alkylphenol polyoxyethylene ether in an approximate amount of 1 wt % to 4 wt %.
    Type: Application
    Filed: September 24, 2007
    Publication date: September 18, 2008
    Applicants: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., SUTECH TRADING LIMITED
    Inventors: HONG-HAI XU, ZHENG-JIANG REN, JIANG-RONG DING, JI-KAI LIU
  • SURFACE TREATMENT PROCESS FOR METAL ARTICLES
    Publication number: 20080185020
    Abstract: A surface treatment process for a metal article includes the following steps. Firstly, a metal article, made of at least one of copper and an alloy thereof, is provided. Secondly, a surface of the metal article is degreased. Thirdly, the surface of the metal article is activated in an acid solution. Finally, the surface of the metal article is deactivated by submersion in an antioxidant agent.
    Type: Application
    Filed: August 29, 2007
    Publication date: August 7, 2008
    Applicants: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., SUTECH TRADING LIMITED
    Inventors: JIANG-RONG DING, ZHENG-JIANG REN, HONG-HAI XU
  • METAL SURFACE CLEANER AND METHOD FOR CLEANING METAL PARTS
    Publication number: 20080153734
    Abstract: A surface cleaner for metal parts (e.g., steel articles) is an aqueous solution, which contains a component of phosphoric acid (H3PO4) from approximately 15 wt % (percent by weight) to approximately 25 wt %, a measurable component of ferrous ions (Fe2+) less than about 5 wt %, and water. Due to the beneficial composition of the surface cleaner, contaminants (e.g., oils, lubrications, and rust) can easily be removed from the surfaces of the metal parts, especially steel parts.
    Type: Application
    Filed: August 29, 2007
    Publication date: June 26, 2008
    Applicants: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., SUTECH TRADING LIMITED
    Inventors: JIANG-RONG DING, ZHENG-JIANG REN, HONG-HAI XU