Patents by Inventor Lloyd H. Ketchum, Jr.

Lloyd H. Ketchum, Jr. 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).

  • Patent number: 5126050
    Abstract: A periodic multistage process which minimizes fugitive pollutant emissions has been developed for the removal and destruction of volatile, semi-volatile, and non-volatile organic contaminants from either water, wastewater, or spent granular activated carbon. This invention relates to methods, materials, and systems for treating these contaminants by a process and devices which uniquely combine granular activated carbon adsorption and desorption with biological treatment. The process and devices extend existing treatment systems by: (1) providing biofilm growth in a Sequencing Batch Biofilm Reactor on gas permeable membrane which uses oxygen for the supply of the electron acceptor and other organics (e.g.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: June 30, 1992
    Assignee: SBR Technologies, Inc.
    Inventors: Robert L. Irvine, Lloyd H. Ketchum, Jr., Peter A. Wilderer, Carlo D. Montemagno
  • Patent number: 4511657
    Abstract: This invention relates to the treatment of obnoxious waste effluents, both industrial and municipal, such as chemical waste landfill leachates, chemical process wastewaters and other obnoxious waste effluents by the use of microbial cultures, especially adapted to biodegrade the obnoxious chemicals in the chemical wastes, such as activated sludge and inoculants for activated sludge, and the new inoculated activated sludges and their use in biological wastewater systems such as continuous and batch reactors.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: April 16, 1985
    Assignee: Occidental Chemical Corporation
    Inventors: Joseph F. Colaruotolo, Robert L. Irvine, Lloyd H. Ketchum, Jr., Wei-chi Ying