Patents by Inventor David C. Szlag

David C. Szlag 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 reduction of inorganic contaminants from waste streams
    Patent number: 7479230
    Abstract: The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contacting the fluid stream with used alumina, such as used Claus catalyst.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: January 20, 2009
    Assignees: Mar Systems LLC., The United States of America as represented by the Administration of the U.S. Environmental Protection Agency
    Inventors: Claude Kennard, Michael A. Gonzalez, David C. Szlag
  • Process for reduction of inorganic contaminants from waste streams
    Patent number: 7449118
    Abstract: The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contacting the fluid stream with used alumina, such as used Claus catalyst.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: November 11, 2008
    Assignees: MAR Systems, LLC., The United States as represented by the Administrator of the U.S. Environmental Protection Agency
    Inventors: Claude Kennard, Michael A. Gonzalez, David C. Szlag
  • PROCESS FOR REDUCTION OF INORGANIC CONTAMINANTS FROM WASTE STREAMS
    Publication number: 20080135487
    Abstract: The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contacting the fluid stream with used alumina, such as used Claus catalyst.
    Type: Application
    Filed: February 1, 2008
    Publication date: June 12, 2008
    Applicant: METAL ALLOY RECLAIMERS, INC.
    Inventors: Claude KENNARD, Michael A. GONZALEZ, David C. SZLAG
  • PROCESS FOR REDUCTION OF INORGANIC CONTAMINANTS FROM WASTE STREAMS
    Publication number: 20080135486
    Abstract: The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contacting the fluid stream with used alumina, such as used Claus catalyst.
    Type: Application
    Filed: February 1, 2008
    Publication date: June 12, 2008
    Applicant: METAL ALLOY RECLAIMERS, INC.
    Inventors: Claude KENNARD, Michael A. GONZALEZ, David C. SZLAG
  • Process for reduction of inorganic contaminants from waste streams
    Patent number: 7341667
    Abstract: The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contacting the fluid stream with used alumina, such as used Claus catalyst.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: March 11, 2008
    Assignees: MAR Systems, LLC, The United States of America as represented by the Administrator of the U.S. Environmental Protection Agency
    Inventors: Claude Kennard, Michael A. Gonzalez, David C. Szlag
  • Aqueous two-phase protein extraction
    Patent number: 5093254
    Abstract: An aqueous two-phase protein partitioning system is disclosed which employs polyvinylpyrrolidone as the upper phase and maltodextrin as the lower phase and provides a low-cost system for protein partitioning. The system can also be employed with the amion derivatives of chlorotriazine dyes, which bind in a noncovalent manner with the PVP and serve as a ligand for the proteins to be separated.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: March 3, 1992
    Assignee: The United States of America, as represented by the Secretary of Commerce
    Inventors: Kenneth A. Giuliano, David C. Szlag