Patents by Inventor Douglas J. Herber

Douglas J. Herber 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: 10870072
    Abstract: A clarifier tank insert assembly configured to be inserted into a frac tank. The clarifier tank insert assembly includes a housing that defines a housing interior and includes a bottom opening, at least a first plate pack assembly disposed in the housing interior, and at least a first pipe positioned within the housing interior and above the first plate pack assembly. The first plate pack assembly includes at least first and second parallel plates and the first plate defines a plate angle with the bottom surface of the housing. The first pipe includes a plurality of inflow openings defined therein. A water path extends through the bottom opening, between the first and second parallel plates and into the inflow openings in the pipe.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: December 22, 2020
    Assignee: UNITED RENTALS, INC.
    Inventors: Douglas J. Herber, Bruce J. Lesikar
  • Publication number: 20190336889
    Abstract: A clarifier tank insert assembly configured to be inserted into a frac tank. The clarifier tank insert assembly includes a housing that defines a housing interior and includes a bottom opening, at least a first plate pack assembly disposed in the housing interior, and at least a first pipe positioned within the housing interior and above the first plate pack assembly. The first plate pack assembly includes at least first and second parallel plates and the first plate defines a plate angle with the bottom surface of the housing. The first pipe includes a plurality of inflow openings defined therein. A water path extends through the bottom opening, between the first and second parallel plates and into the inflow openings in the pipe.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 7, 2019
    Inventors: Douglas J. Herber, Bruce J. Lesikar
  • Patent number: 9397514
    Abstract: Various systems, processes, and techniques may be used for converting alternating current power to direct current power for an electro-chemical reactor. In certain implementations, a system and a process may include the ability to receive an alternating current power signal, convert the alternating current signal to a direct current signal, and distribute the direct current signal to at least two power conversion modules coupled to a mounting structure. Each power conversion module may be able to convert a portion of the direct current signal to a high-frequency alternating current signal, adjust the voltage of the high-frequency alternating current signal, convert the voltage-adjusted high-frequency alternating current signal to a direct current power signal, and filter the direct current power signal. The system and the process may include the ability to combine the direct current power signals from the modules into an output direct current power signal for an electro-chemical reactor.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 19, 2016
    Assignee: BAKERCORP
    Inventors: Douglas J. Herber, Mark Sullivan
  • Publication number: 20140266074
    Abstract: Various systems, processes, and techniques may be used for converting alternating current power to direct current power for an electro-chemical reactor. In certain implementations, a system and a process may include the ability to receive an alternating current power signal, convert the alternating current signal to a direct current signal, and distribute the direct current signal to at least two power conversion modules coupled to a mounting structure. Each power conversion module may be able to convert a portion of the direct current signal to a high-frequency alternating current signal, adjust the voltage of the high-frequency alternating current signal, convert the voltage-adjusted high-frequency alternating current signal to a direct current power signal, and filter the direct current power signal. The system and the process may include the ability to combine the direct current power signals from the modules into an output direct current power signal for an electro-chemical reactor.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Inventors: Douglas J. Herber, Mark Sullivan