Patents by Inventor Xiangshan Ding

Xiangshan 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).

  • Degradable container and a method of forming same
    Patent number: 6410108
    Abstract: A degradable container is disclosed as containing 60 wt % to 70 wt % of a plant fiber, from 10 wt % to 30 wt % of an adhesive and from 0.1 wt % to 5 wt % of a demoulding agent, in which the adhesive is a modified urea-formaldehyde resin. A method of forming a degradable container is also disclosed as including the steps of (a) grinding a plant fiber to a size smaller than a pre-determined size; (b) nixing grounded plant fiber obtained under step (a) with a demoulding agent to form a premixed material; (c) mixing said premixed material with an adhesive into a powder form; (d) press-moulding said powder obtained under step (c) a first time under a pressure of 5-80 MPa; and (e) press-moulding said powder a second time under a pressure of 1.5-16 MPa into said container.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: June 25, 2002
    Assignee: CS Environmental Technology Ltd. Hong Kong
    Inventors: Qiang Liu, Jun Wang, Zhengchu Bin, Chuxun Lu, Xiangshan Ding, Kam Pui Tang
  • Degradable container and a method of forming same
    Patent number: 6074587
    Abstract: A degradable container is disclosed as containing 60 wt % to 70 wt % of a plant fiber, from 10 wt % to 30 wt % of an adhesive and from 0.1 wt % to 5 wt % of a demoulding agent, in which the adhesive is a modified urea-formaldehyde resin. A method of forming a degradable container is also disclosed as including the steps of (a) grinding a plant fiber to a size smaller than a pre-determined size; (b) mixing grounded plant fiber obtained under step (a) with a demoulding agent to form a premixed material; (c) mixing said premixed material with an adhesive into a powder form; (d) press-moulding said powder obtained under step (c) a first time under a pressure of 5-80 MPa; and (e) press-moulding said powder a second time under a pressure of 1.5-16 MPa into said container.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: June 13, 2000
    Assignee: CS Enviromental Technology Ltd.
    Inventors: Qiang Liu, Jun Wang, Zhengchu Bin, Chuxun Lu, Xiangshan Ding, Kam Pui Tang