Patents by Inventor Sheng-En Hsu

Sheng-En Hsu 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 conversion treating surface of magnesium alloy workpiece
    Patent number: 8262810
    Abstract: A method for conversion treating a surface of a magnesium alloy workpiece includes the steps of degreasing, acid pickling, alkali pickling, and chemical converting. A phosphating solution is used in the step of chemical converting and includes the following solution concentrations: 2.89 gram/liter to 8.67 gram/liter of phosphoric acid, 0.3 gram/liter to 1.0 gram/liter of carbamide, 0.39 gram/liter to 1.56 gram/liter of nitric acid, 6 gram/liter to 30 gram/liter of manganese dihydrogen phosphate, and 0.2 gram/liter to 0.6 gram/liter of tannin.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: September 11, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Sheng-En Hsu, Yong Liu, Fei-Xiang Li, Zhao Jin
  • METHOD FOR CONVERSION TREATING SURFACE OF MAGNESIUM ALLOY WORKPIECE
    Publication number: 20110155287
    Abstract: A method for conversion treating a surface of a magnesium alloy workpiece includes the steps of degreasing, acid pickling, alkali pickling, and chemical converting. A phosphating solution is used in the step of chemical converting and includes the following solution concentrations: 2.89 gram/liter to 8.67 gram/liter of phosphoric acid, 0.3 gram/liter to 1.0 gram/liter of carbamide, 0.39 gram/liter to 1.56 gram/liter of nitric acid, 6 gram/liter to 30 gram/liter of manganese dihydrogen phosphate, and 0.2 gram/liter to 0.6 gram/liter of tannin.
    Type: Application
    Filed: March 11, 2011
    Publication date: June 30, 2011
    Applicants: HONG FU JIN PRECISION INDUSTRY (SHENZHEN) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: SHENG-EN HSU, YONG LIU, FEI-XIANG LI, ZHAO JIN
  • Phosphating solution and method for conversion treating surface of magnesium alloy workpiece
    Patent number: 7942983
    Abstract: An exemplary phosphating solution is used for conversion treating a surface of a magnesium alloy workpiece. The phosphating solution includes: 2.89 gram/liter to 8.67 gram/liter of phosphoric acid, 0.3 gram/liter to 1.0 gram/liter of carbamide, 0.39 gram/liter to 1.56 gram/liter of nitric acid, 6 gram/liter to 30 gram/liter of manganese dihydrogen phosphate, and 0.2 gram/liter to 0.6 gram/liter of tannin. A method for conversion treating a surface of a magnesium alloy workpiece is also provided.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: May 17, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Sheng-En Hsu, Yong Liu, Fei-Xiang Li, Zhao Jin
  • MAGNESIUM ALLOY ARTICLE AND METHOD FOR FABRICATING THE SAME
    Publication number: 20090162678
    Abstract: An exemplary magnesium alloy article includes a main body and a phosphate film formed on a surface of the magnesium alloy main body. The phosphate film contains carbon, oxygen, magnesium, aluminum, phosphorus, and manganese. A method for fabricating the present magnesium alloy article is also provided.
    Type: Application
    Filed: July 3, 2008
    Publication date: June 25, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: SHENG-EN HSU, YONG LIU, FEI-XIANG LI, ZHAO JIN
  • ACID PICKLING SOLUTION AND METHOD FOR SURFACE TREATMENT UTILIZING THE SAME
    Publication number: 20090159096
    Abstract: An exemplary acid pickling solution for treating a surface of a magnesium alloy workpiece. The acid pickling solution consists of 5 g/l to 30 g/l of citric acid, 1.5 g/l to 6 g/l of surface active agent, wherein the surface active agent is a water-soluble and silicone free agent. A method for treating a surface of a magnesium alloy workpiece is also provided.
    Type: Application
    Filed: July 3, 2008
    Publication date: June 25, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: SHENG-EN HSU, YONG LIU, FEI-XIANG LI, ZHAO JIN
  • PHOSPHATING SOLUTION AND METHOD FOR CONVERSION TREATING SURFACE OF MAGNESIUM ALLOY WORKPIECE
    Publication number: 20090159158
    Abstract: An exemplary phosphating solution is used for conversion treating a surface of a magnesium alloy workpiece. The phosphating solution includes: 2.89 gram/liter to 8.67 gram/liter of phosphoric acid, 0.3 gram/liter to 1.0 gram/liter of carbamide, 0.39 gram/liter to 1.56 gram/liter of nitric acid, 6 gram/liter to 30 gram/liter of manganese dihydrogen phosphate, and 0.2 gram/liter to 0.6 gram/liter of tannin. A method for conversion treating a surface of a magnesium alloy workpiece is also provided.
    Type: Application
    Filed: July 3, 2008
    Publication date: June 25, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: SHENG-EN HSU, YONG LIU, FEI-XIANG LI, ZHAO JIN