Patents by Inventor Shuhua Pang

Shuhua Pang 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).

  • Process for producing fine rubber powder by using waste rubber
    Patent number: 6664304
    Abstract: This invention provides a process for producing fine rubber powders by using waste rubber, comprising the steps of pre-pulverizing waste rubber into particles with a size of 1-4 mm; soaking the particles in a solvent selected from one or more alcohols and/or ethers; and pulverizing the soaked rubber particles into rubber powders with a size of less than 180 &mgr;m. The process according to the invention is an ideal method in industry due to its low costs and without pollution.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: December 16, 2003
    Inventor: Shuhua Pang
  • Process for producing fine rubber powder by using waste rubber
    Publication number: 20010036969
    Abstract: This invention provides a process for producing fine rubber powders by using waste rubber, comprising the steps of pre-pulverizing waste rubber into particles with a size of 1-4 mm; soaking the particles in a solvent selected from one or more alcohols and/or ethers; and pulverizing the soaked rubber particles into rubber powders with a size of less than 180 &mgr;m. The process according to the invention is an ideal method in industry due to its low costs and without pollution.
    Type: Application
    Filed: April 20, 2001
    Publication date: November 1, 2001
    Inventor: Shuhua Pang