Patents by Inventor Maria Trevino

Maria Trevino 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).

  • Wastewater organic acid removal process
    Patent number: 5395536
    Abstract: A process for removing carboxylic acids from aqueous solutions using a composition of a polyaluminum chlorohydrate and a cationic polyelectrolyte is described. After or during the initial contact of the aqueous solution with the composition, an organic liquid may optionally be added after which separation into an aqueous phase and an organic phase occurs whereby the organic acids are removed in the organic phase. The preferred polyaluminum chlorohydrate is aluminum chlorohydrate, and the preferred cationic polyelectrolyte is a high molecular weight poly(dimethyl diallyl) ammonium chloride.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: March 7, 1995
    Assignee: Baker Hughes, Inc.
    Inventors: William M. Brown, Maria Trevino