Patents by Inventor Guowu Ding

Guowu Ding 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).

  • Patent number: 9683327
    Abstract: A cutting and double-face leather integrated dyeing process for Tan sheep skin, which comprises the following steps: cutting?washing with water?retanning?primary dyeing?primary color fixing?secondary dyeing?fatliquoring?secondary color fixing?bleaching?drying?a finished product. Tan sheep skin leather boards and fleeces dyed by the process of the invention have no cross color and color fading with each other, a high color fastness, and uniform dyeing; the prepared Tan sheep skin products such as clothing, etc., not only have the characteristics of a high added value and good practicability, but also can more largely increase product benefits and lower the production cost.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: June 20, 2017
    Assignee: Ningxia Wuzhong Jingyi Fur-Products Co., LTD.
    Inventors: Weining Ma, Shaohu Ma, Guowu Ding, Litao Ma, Weirong Ma, Xi Ding
  • Publication number: 20160251802
    Abstract: The invention relates to the technical field of animal fur processing, and particularly relates to a cutting and double-face leather integrated dyeing process for Tan sheep skin, which comprises the following steps: cutting?washing with water?retanning?primary dyeing?primary colour fixing?secondary dyeing?fatliquoring?secondary colour fixing?bleaching?drying?a finished product. In the process of the invention, the third-grade Tan sheep skin which does not reach a superior quality is selected and subjected to cutting treatment and then double-face leather integrated dyeing; after the dyeing has been completed, the leather board has softness, good fullness and elongation, substantially uniform thickness, and no phenomena such as stiff board and swelling board occur; the fleece is smooth, flexible and loose and clean with complete needle velvet, and no phenomena such as serious fur shedding, oily fur and fur twisting occur.
    Type: Application
    Filed: November 7, 2014
    Publication date: September 1, 2016
    Inventors: Weining Ma, Shaohu Ma, Guowu Ding, Litao Ma, Weirong Ma, Xi Ding