Patents by Inventor Changrong Wang

Changrong 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).

  • Method for manufacturing packaging material and sheets from plant straws
    Patent number: 6306324
    Abstract: A method for manufacturing packaging material and sheets, such as disposable food containers or seedling-breeding containers from straws, comprising pulverizing into powder, with 20-50 mesh; stirring the powder of straw, a binder, a lubricant and water in weight parts of 70-88, 0.3-1.0, 0.05-1 and 10-20 respectively, at ambient temperature for 5-15 minutes under 50-80 rpm to obtain a mixture, and thermal molding the mixture at a temperature of 100-150° C., and under a pressure of 20-250 MPa.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: October 23, 2001
    Inventor: Changrong Wang