Patents Represented by Law Firm Warren & Perez
  • Patent number: 5542614
    Abstract: An apparatus and method for chemically and physically stabilizing contaminated soil is disclosed. The soil is homogenized in a homogenizer; dropped into a mixer below the homogenizer and mixed with an additive; then dropped to a processing terminus located below the mixer. The apparatus and method are useful for processing highly clumped and/or acidic soil, e.g., soil contaminated with mining waste.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: August 6, 1996
    Assignee: Itex Environmental Services, Inc.
    Inventor: Irfan A. Toor
  • Patent number: 5541386
    Abstract: A disposal of waste material including water, volatile components and vitrifiable components, the waste material is heated in a dehydrator to remove the water, heated in a high-temperature dryer to vaporize hydrocarbon liquids, and then fed to the focus point of a primary plasma reactor where plasma arc jets are focused on the surface of a pool of the vitrifiable components. At the focus point the vitrifiable components are melted, and the volatile components are volatized. The melted vitrifiable components are received in a quench chamber where they solidify on a quench roller and are broken into chips and delivered to a receiving area. Heat from the quench chamber is transferred to the dehydrator and high-temperature dryer. The hydrocarbon liquids and volatized components are fed to a secondary plasma reactor where they are disassociated into their elemental components.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: July 30, 1996
    Assignee: IRM, L.P.
    Inventors: Obaid U. Alvi, Irfan A. Toor
  • Patent number: 5451738
    Abstract: For disposal of waste material including water, volatile components and vitrifiable components, the waste material is heated in a dehydrator to remove the water, heated in a high-temperature dryer to vaporize hydrocarbon liquids, and then fed to the focus point of a primary plasma reactor where plasma arc jets are focused on the surface of a pool of the vitrifiable components. At the focus point the vitrifiable components are melted, and the volatile components are volatized. The melted vitrifiable components are received in a quench chamber where they solidify on a quench roller and are broken into chips and delivered to a receiving area. Heat from the quench chamber is transferred to the dehydrator and high-temperature dryer. The hydrocarbon liquids and volatized components are fed to a secondary plasma reactor where they are disassociated into their elemental components.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: September 19, 1995
    Assignee: Itex Enterprises Services, Inc.
    Inventors: Obaid U. Alvi, Irfan A. Toor
  • Patent number: 5431276
    Abstract: The invention is an attachable lid for dispensing additives into a cup. The lid has a plurality of compartments which contain additives. Each compartment has a plunger such that when pressure is applied to the lid the plunger punctures the bottom of the compartment and the additive is dispensed into the cup.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: July 11, 1995
    Assignee: Quik-Lid, Inc.
    Inventor: Tony Lialin
  • Patent number: 5360609
    Abstract: A process incorporating a chlorine dioxide generating compound such as sodium chlorite into a polymer or oligomer film is coated onto various substrates. Controlled release is accomplished by absorption of moisture from the environment. The chlorine dioxide so released acts as a biocide and a fumigant. The chlorite is dissolved into a hydrogen bonded phase containing a monomeric, or polymeric amide or a monomeric or polymeric alcohol. This hydrogen bonded phase is then mixed with an incompatible apolar phase consisting of anhydride containing such as polymers such as maleic anhydride copolymers with olefins, grafted maleic anhydride-polypropylene polymers. Chlorine dioxide is released by direct reaction of the anhydride or hydrolyzed anhydride with the chlorite anion across the phase boundary. Increasing the molecular weight of the phases, increasing the phase incompatibility and decreasing the concentration of anhydride will all decrease the chlorine dioxide release rate.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: November 1, 1994
    Assignee: Southwest Research Institute
    Inventor: Stephen T. Wellinghoff
  • Patent number: 5299806
    Abstract: An educational device having a chamber with a plurality of holes extending through the chamber. A plurality of ropes are selectively configured in the chamber and portions of the ropes are exposed outside the chamber. The ends of the exposed ropes are connected to knobs that allow a user to pull on a selected rope end thereby causing a movement of another rope end through another hole. The device encourages and permits a mental determination of the configuration of ropes within the chamber.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: April 5, 1994
    Assignee: Board of Regents, The University of Texas System
    Inventor: Fred L. Fifer, Jr.