Patents by Inventor Ramiro Olvera Oropeza

Ramiro Olvera Oropeza 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 recycling expanded polymers
    Patent number: 6467706
    Abstract: A process for recovering thermoplastic polymer particles from an expanded thermoplastic polymer material includes grinding the expanded thermoplastic polymer material in a grinding chamber under elevated temperature while feeding ionized gas through the grinding chamber during the grinding. An apparatus for recovering the thermoplastic polymer particles from the expanded thermoplastic polymer material includes a grinding chamber into which the expanded thermoplastic polymer material is introduced, the grinding chamber having grinding components therein, one or more inlet passages at a bottom potion of the grinding chamber for entry of ionized gas, and optionally also for entry of hot gas, and one or more outlet passages at a top portion of the grinding chamber for exit of gases from the grinding chamber.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: October 22, 2002
    Assignee: Xerox Corporation
    Inventors: Juan Carlos Uribe Jaimes, Ramiro Olvera Oropeza, Carlos Ocadiz, Javier Juarez