Patents by Inventor Ming-Gang Wang

Ming-Gang Wang 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).

  • Quartz glass with low content of hydroxyl and high purity and method for preparing the same
    Patent number: 11981594
    Abstract: A method for preparing quartz glass with low content of hydroxyl and high purity, includes providing silica powders including hydroxyl groups. The silica powders are dehydroxylated, which includes drying the silica powders at a first temperature, heating the silica powders up to a second temperature and introducing a first oxidizing gas including halogen gas, thereby obtaining first dehydroxylated powders, and heating the first dehydroxylated powders up to a third temperature and introducing a second oxidizing gas including oxygen or ozone, thereby obtaining second dehydroxylated powders. The second dehydroxylated powders are heated up to a fourth temperature to obtain a vitrified body. The vitrified body is cooled to obtain the quartz glass with low content of hydroxyl and high purity. The quartz glass prepared by the above method has low content of hydroxyl and high purity. A quartz glass with low content of hydroxyl and high purity is also provided.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: May 14, 2024
    Assignees: ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS CO., LTD., JIANGSU ZHONGTIAN TECHNOLOGY CO., LTD.
    Inventors: Ming-Ming Tang, Meng-Fei Wang, Yi-Gang Qian, Jun-Yi Ma, Xian-Gen Zhang, Yi-Chun Shen, Ya-Li Chen
  • Metal structure defining circular flanged hole and method for making the same
    Patent number: 7934409
    Abstract: An exemplary metal structure (10, 30) includes a base portion (14, 34), a flange (122, 322), and an edge portion (1241, 3241). The base portion defines a circular flanged hole (12, 32). The flange extends from a top surface of the base portion and the flange surrounds the circular flanged hole. The edge portion is configured for connecting an inside surface of the flange and the top surface of the base portion. The edge portion includes an edge surface, and a ratio of a radius of the edge surface (1242, 3242) of the edge portion with respect to a thickness of the base portion is less than 0.4. A method for making a circular flanged hole in a metal sheet (15) is also provided.
    Type: Grant
    Filed: November 23, 2007
    Date of Patent: May 3, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Wen-Tao Wang, Cheng-Hung Lin, Zhi-Gang Hu, Yong Zeng, Zhi-Guo Yang, Ming-Gang Wang
  • METAL STRUCTURE DEFINING CIRCULAR FLANGED HOLE AND METHOD FOR MAKING THE SAME
    Publication number: 20080231050
    Abstract: An exemplary metal structure (10, 30) includes a base portion (14, 34), a flange (122, 322), and an edge portion (1241, 3241). The base portion defines a circular flanged hole (12, 32). The flange extends from a top surface of the base portion and the flange surrounds the circular flanged hole. The edge portion is configured for connecting an inside surface of the flange and the top surface of the base portion. The edge portion includes an edge surface, and a ratio of a radius of the edge surface (1242, 3242) of the edge portion with respect to a thickness of the base portion is less than 0.4. A method for making a circular flanged hole in a metal sheet (15) is also provided.
    Type: Application
    Filed: November 23, 2007
    Publication date: September 25, 2008
    Applicant: HONGFU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
    Inventors: WEN-TAO WANG, CHENG-HUNG LIN, ZHI-GANG HU, YONG ZENG, ZHI-GUO YANG, MING-GANG WANG