Patents by Inventor Sonny Mark

Sonny Mark 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).

  • Polymer enhanced diafiltration: filtration using PGA
    Patent number: 6533938
    Abstract: A method is describe for removing metal ions of interest from aqueous solutions containing low concentrations of the metal ions of interest. The method involves the use of a microbially produced polymer, &ggr;-glutamic acid. The polymer is used in conjunction with tangential flow filtration and results in substantial removal of metal ions.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: March 18, 2003
    Assignee: Worcester Polytechnic Institue
    Inventors: Alexander Dilorio, Sonny Mark, Philip A. Tongue