Patents by Inventor Robert Asbell

Robert Asbell 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: 11970411
    Abstract: A method of treating aqueous, preferably concentrated, waste streams with a unique combination of steps in a way that is easily scalable and able to be used with batch or continuous flows. The method comprises at least the following steps: Adding at least one precipitating agent to the waste water to produce precipitated solids; and removing the precipitated solids from the waste water using a forward flushable membrane to remove the precipitate solids.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: April 30, 2024
    Assignee: GARRATT-CALLAHAN COMPANY
    Inventors: E. H. Kelle Zeiher, Henri Robert Asbell, James E Gamlen, Daron Gareth Evans
  • Patent number: 11203536
    Abstract: A method of treating aqueous, preferably concentrated, waste streams with a unique combination of steps in a way that is easily scalable and able to be used with batch or continuous flows. The method comprises at least the following steps: Adding at least one precipitating agent to the waste water to produce precipitated solids; and removing the precipitated solids from the waste water using a forward flushable membrane to remove the precipitate solids.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: December 21, 2021
    Assignee: Garratt-Callahan Company
    Inventors: E. H. Kelle Zeiher, Henri Robert Asbell, James E Gamlen, Daron Gareth Evans
  • Patent number: 8582330
    Abstract: A switching power supply transmits power between a single front end including electromagnetic interference filtering and power factor correction circuits to an output end at a high voltage and high frequency from which any desired DC voltage or waveform may be readily and directly derived with high efficiency in order to reduce size and weight of components including transformers at the output end and allow greater variety of connection wiring of reduced weight and volume to be used. The high frequency is limited at the low frequency end by the frequency at which significant power can be transferred through, for example, a ferrite core or other transformer of sufficiently low volume to accommodate closely spaced loads or power converters and at the high frequency end by the wavelength in the connection wiring such that 1/10 wavelength is greater than one thousand feet.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: November 12, 2013
    Assignee: Lockheed Martin Corporation
    Inventors: William Kalms, John Morber, Robert Asbell
  • Publication number: 20100188875
    Abstract: A switching power supply transmits power between a single front end including electromagnetic interference filtering and power factor correction circuits to an output end at a high voltage and high frequency from which any desired DC voltage or waveform may be readily and directly derived with high efficiency in order to reduce size and weight of components including transformers at the output end and allow greater variety of connection wiring of reduced weight and volume to be used. The high frequency is limited at the low frequency end by the frequency at which significant power can be transferred through, for example, a ferrite core or other transformer of sufficiently low volume to accommodate closely spaced loads or power converters and at the high frequency end by the wavelength in the connection wiring such that 1/10 wavelength is greater than one thousand feet.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 29, 2010
    Inventors: William Kalms, John Morber, Robert Asbell