Patents by Inventor Rongbiao Zhang

Rongbiao Zhang 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).

  • Improved Cigarette Filters Comprising Compound Fibers
    Publication number: 20060225752
    Abstract: An improved cigarette filter material/method is provided, especially a compound fiber filter. Cylindrical, with paper tube, filled with tow of interconnected compound fibers in parallel with the cylindrical axis. Said compound fiber comprises a fiber core with a surface layer made from adsorptive materials on. The adsorptive material and the improved filter can effectively adsorb harmful substances from tobacco smoke, and not affect the cigarette taste or flavor.
    Type: Application
    Filed: April 5, 2006
    Publication date: October 12, 2006
    Inventors: Jianmin Cui, Rongbiao Zhang, Jianqiang Xu, Shujun Tan