Patents Examined by Matthew O. Savage
  • Patent number: 10919780
    Abstract: A reusable water filter cartridge comprises a housing having a water-permeable base and a body extending from the base. The base and the body define a cavity for receiving filter media. There is a water-permeable lid which is removably securable to the housing via interlocking connectors on the lid and the housing. The lid is securable to the housing by rotating the lid relative to the housing in a first rotational direction to engage the connectors on the lid and the housing with each other. The lid is releasable from the housing by rotating the lid relative to the housing in a second rotational direction which is opposite to the first rotational direction to disengage the connectors on the lid and the housing from each other. Water to be filtered enters the housing via the lid, passes through the filter media contained in the cavity, and exits the housing via the base.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: February 16, 2021
    Assignee: Santevia Water Systems Inc.
    Inventor: Yvonne Anderson
  • Patent number: 10913666
    Abstract: Process for the treatment of water containing low quantities of hydrocarbons (as dispersed or dissolved or emulsified) by means of expanded graphite having an apparent density from 2 to less than 5 g/l, wherein said hydrocarbons are present in a quantity less than or equal to 1 g/l, a specific surface area from 50 to 100 m2/g and a carbon/oxygen ratio (C:O)?100. The expanded graphite is mixed vigorously for a short time with the water contaminated by hydrocarbons and easily separated at the end of the treatment.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: February 9, 2021
    Assignee: Directa Plus S.p.A.
    Inventors: Giulio Cesareo, Annalisa Pola, Laura Giorgia Rizzi
  • Patent number: 10881989
    Abstract: An underdrain block for filtering water includes a top wall, a bottom wall, and two side walls connecting the top wall to the bottom wall to define an internal chamber. The bottom wall contains a plurality of orifices that allow liquid and solid materials to enter and exit the internal chamber. An underdrain filtering system can be formed by securing an underdrain lateral, which is formed from one or a plurality of underdrain blocks, to a filter floor. Also included is a method of preparing an underdrain lateral for providing even distribution of backwash water along the underdrain lateral and a method of validating even distribution of backwash water across an underdrain lateral.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: January 5, 2021
    Assignee: Xylem Water Solutions Zelienople LLC
    Inventors: Dean T. Berkebile, Scott R. Cable, John L. Geibel, Robert J. Green, Howard J. Sweeney, Robert Lee Wiley, Jr.
  • Patent number: 10882753
    Abstract: The invention relates to a method for exchanging interlayer anions of a layered double hydroxide (LDH) with other anions whose affinity for the LDH is lower than the one of the starting interlayer anions, which comprises the successive steps of: (1) exchanging the starting interlayer anions of a layered double hydroxide with polyoxometalate anions in order to obtain a layered double hydroxide with polyoxometalate anions as interlayer anions, and (2) exchanging the polyoxometalate anions of the layered double hydroxide obtained in step (1) with other anions whose affinity for the LDH is lower than the one of the starting interlayer anions in order to obtain a layered double hydroxide with other anions as interlayer anions.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: January 5, 2021
    Inventor: Grégory Lefevre
  • Patent number: 10882763
    Abstract: The invention relates to a method for treating an aqueous fluid, comprising bringing into contact the aqueous fluid with a fluidised bed of powdered activated carbon, and separating the aqueous fluid from the bed of powdered activated carbon, including a step of managing the fluidised bed of powdered activated carbon. The management step comprises the extraction of a fraction of the fluidised bed of powdered activated carbon in the form of sludge, at least a separation of the sludge extracted in the previous step so as to obtain a fraction having an insoluble index HCl which is higher than that of the sludge before separation by at least 5 percentage points, and a reinjection of said fraction into the fluidised bed of powdered activated carbon.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: January 5, 2021
    Assignee: SAUR
    Inventor: Sabine Blondeau
  • Patent number: 10882022
    Abstract: A method of removing an organic pollutant from water by contacting the water with a ball milled and sonicated oil fly ash powder to adsorb the organic pollutant onto the ball milled and sonicated oil fly ash powder. A method of producing a ball milled and sonicated oil fly ash powder involving ball milling oil fly ash to provide ball milled oil fly ash particles with an average particle size of less than 1 ?m and sonicating the ball milled oil fly ash particles in an aqueous medium to form the ball milled and sonicated oil fly ash powder. A method of improving recovery of valuable metals/elements from oil fly ash.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: January 5, 2021
    Assignee: King Abdulaziz University
    Inventors: Numan Salah, M. Sh. Abdel-Wahab, Adnan Memic, Ahmed Alshahrie, Mohammad Aslam
  • Patent number: 10881990
    Abstract: A filter media retainer has a plate having a first end wall, a second end wall, and a pair of longitudinal sidewalls connected to opposing sides of the first end wall and the second end wall. The plate has a top surface opposite a bottom surface. A plurality of hopper-shaped compartments are formed on the top surface and have a first sloped wall and a second sloped wall angled toward the first sloped wall in a direction from the top surface toward the bottom surface. The plate further has a top sidewall on the top surface of the plate separating adjacent hopper-shaped compartments from each other. The plate further has at least one first slot extending through at least one of the first sloped wall and the second sloped wall, and at least one second slot extending through the top sidewall.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: January 5, 2021
    Assignee: Xylem Water Solutions Zelienople LLC
    Inventors: John L. Geibel, Robert J. Green, Howard J. Sweeney, Robert Lee Wiley, Jr.
  • Patent number: 10875787
    Abstract: Systems and methods are provided for the removal and disposal of radium form an aqueous medium. The systems and methods include the removal of radium from a source by contact with either natural or synthetic zeolite. The spent zeolite is monitored for radiation levels and replaced with fresh zeolite when the level of radioactivity reaches approximately 9,000 pCi/g. Spent zeolite is disposed of at a low-level radioactive waste site. A system for monitoring and maintaining radium removal and disposal by an off-site provided is also disclosed.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: December 29, 2020
    Assignee: WRT INTERNATIONAL LLC
    Inventors: John E. Litz, Charles S. Williams
  • Patent number: 10870590
    Abstract: A self-regenerating ion-exchange water softener has an inlet connectable to a source of softenable water under pressure, a resin chamber connected thereto, and an outlet connected to the resin chamber. A salt chamber is located above the resin chamber and contains a water-soluble salt for regenerating the resin. A chamber connection allows controlled downward flow of fluid from the salt chamber to the resin chamber. A first normally-open pressure-sensitive valve closes in response to increased water pressure in the resin chamber, and normally permits a downward fluid flow from the salt chamber to the resin chamber. A passageway permits pressurized water to flow upwardly from the resin chamber to a point above the high-water mark of the salt chamber to generate salt solution for contacting and regenerating the resin, and has a discharge control above the high-water mark.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: December 22, 2020
    Inventor: Gilles Joseph Hughes, Jr.
  • Patent number: 10870591
    Abstract: A method for removing chromium from a water source can include delivering source water having a hexavalent chromium oxyanion into contact with an ion exchange resin to exchange the hexavalent chromium oxyanion for an anion and convert the source water to treated water, discharging the treated water, rinsing the ion exchange resin with a brine solution to remove the hexavalent chromium oxyanion from the ion exchange resin, converting the hexavalent chromium oxyanion to a trivalent chromium cation, binding the trivalent chromium cation to a chelating resin, and removing the trivalent chromium cation bound to the chelating resin.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: December 22, 2020
    Assignee: U.S. Water Services, Inc.
    Inventor: Michael D. Kelly
  • Patent number: 10870597
    Abstract: Industrial and residential water treatment systems and devices are disclosed for use in preventing hard water buildup or in removing such buildup. The systems and devices include fixed and removable components for delivering water treatment composition. In addition, novel water treatment compositions and methods of treating water are disclosed.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: December 22, 2020
    Assignee: Nuvo Residential, LLC
    Inventors: Laird Washburn, Sean Terry
  • Patent number: 10870589
    Abstract: A filter system for filtering a fluid stream is disclosed herein. The filter system includes a first fluid passage, a first chamber, a second chamber, an adsorbing media, and a second fluid passage. The first fluid passage is arranged such that a fluid stream can flow through the first fluid passage and into the filter system. The first chamber is arranged to hold suspended or dissolved solids, pollutants, and nutrients that are filtered from the fluid stream. The second chamber is positioned above the first chamber and in fluid communication with the first chamber. The adsorbing media is positioned in the second chamber. The second fluid passage is arranged such that filtered fluid from the fluid stream can flow out of the filtering system through the second fluid passage.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: December 22, 2020
    Inventors: Jan D. Graves, Gregory D. Graves
  • Patent number: 10865126
    Abstract: Multiple-tube stormwater filter socks may be used to mitigate stormwater environmental runoff of sediment, hydrocarbons and heavy metals. The stormwater filter socks comprise at least two tubes that are spaced apart by a separator web, and are filled with different types of absorbent media. The stormwater filter socks may be placed around the top grate of a storm drain chamber, and around other environmental runoff sources such as trash bins, roof downspouts and outdoor material stockpiles. The multiple-tube stormwater filter socks may be used to mitigate drips and spills of hydrocarbons such as motor oils, and may be used to contain zinc, copper, lead, chromium, cadmium and other heavy metals.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: December 15, 2020
    Assignee: New Pig Corporation
    Inventors: Matthew James Riley, Michael James Verti, Dane R. Jackson
  • Patent number: 10859181
    Abstract: Disclosed is a water softener valve and a water softener, the water softener valve includes a valve body, the valve body includes a valve cavity, and an inlet passage, an outlet passage, and a waste water passage all communicated with the valve cavity, the valve cavity, the inlet passage, the outlet passage, and the waste water passage all extend towards a first direction, the inlet passage, the outlet passage, and the waste water passage are all located at a periphery of the valve cavity, and adjacent to the valve cavity; ends of the inlet passage, the outlet passage, and the waste water passage which are all located at a same end of the valve body towards the first direction respectively form an inlet, an outlet, and a waste water port.
    Type: Grant
    Filed: November 3, 2018
    Date of Patent: December 8, 2020
    Inventors: Guohua Liu, Zhifeng He
  • Patent number: 10850993
    Abstract: Methods and nanocomposites for the adsorptive removal of aromatic hydrocarbons such as benzene, toluene, ethyl benzene and xylene from contaminated water sources and systems are provided. The nanocomposites contain carbon nanotubes and metal oxide nanoparticles such as Al2O3, Fe2O3 and ZnO impregnated on a surface and/or in pore spaces of the carbon nanotubes. Methods of preparing and characterizing the nanocomposite adsorbents are also provided.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: December 1, 2020
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Muataz Ali Atieh, Aamir Abbas, Basim Ahmed Abussaud
  • Patent number: 10843243
    Abstract: The present invention relates to methods and compositions for water treatment and environmental remediation using nanoparticle supported lipid bilayers (NP-SLBs). In one embodiment, the NP-SLBs are single or multilayer lipid bilayers of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) supported by silica.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: November 24, 2020
    Assignee: TEMPLE UNIVERSITY-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    Inventors: Stephanie L. Wunder, Bojeong Kim
  • Patent number: 10842165
    Abstract: The present invention provides a method for the production of whey proteins in a single step process using combination of chromatography and membrane filtration technique, comprising treating cotton cloth with a mixture of chlorosulphonic acid and chloroform and then subsequently treating it with chloroform, dilute NaOH, glycine and water to recover modified cotton cloth as the product, thereafter fixing product in a membrane filtration device equipped with modified flow pattern and then equilibrating it with equilibration buffer, followed by loading of whey for adsorption of protein on the product and washing of the product with equilibration buffer, thereafter elution of adsorbed proteins with elution buffer, and then regeneration of the product by treating it with dilute HCl and water to reuse the product.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 24, 2020
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Harshavardhan Vishavanath Adikane, Mahendra Devram Jagtap
  • Patent number: 10836653
    Abstract: A device for extracting soluble substances dissolved in an aqueous solution, the extraction device including a peripheral wall and an adsorbent agent contained in the peripheral wall, the adsorbent agent being capable of extracting at least one portion of the soluble substances by contact with the aqueous solution, the extraction device also including a maze, defining a circulation path for the aqueous solution within the peripheral wall, the maze including a main inlet and a main outlet of aqueous solution, in fluid communication with one another via the circulation path, the adsorbent agent being arranged inside the maze so as to be placed in contact with the aqueous solution during the circulation of the latter along the circulation path.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: November 17, 2020
    Inventor: Marc Bermudes
  • Patent number: 10829393
    Abstract: A bio-inspired method for detoxifying contaminated water is disclosed. In the method, polydopamine, a mussel-inspired adhesive catecholamine was used as an adsorbent to effectively remove from contaminated water three major classes of toxic agents: heavy metal ions (e.g., Cr, Hg, Pb, Cu, and Cd), toxic organic species (e.g., 4-aminopyridine), and radioisotopes (e.g., Lutetium-177). Furthermore, the polydopamine adsorbent was regenerated by treatment with acid or hydrogen peroxide.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: November 10, 2020
    Assignee: Northwestern University
    Inventors: Phillip B. Messersmith, Haeshin Lee
  • Patent number: 10829396
    Abstract: A purification device is provided that includes a porous container, purification media retained in the porous container, and a flow controller integral to the porous container. A purification device is also provided that includes a porous elastic container, purification media, and a flow controller. The porous elastic container has a pocket formed therein. The purification media is compressibly retained in the porous elastic container. The flow controller is elastically retained in the pocket of the porous elastic container.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: November 10, 2020
    Assignee: UNGER MARKETING INTERNATIONAL, LLC
    Inventors: Robert Camp, Paul Adams, Stephen Huda