Patents Represented by Attorney, Agent or Law Firm Ken Richardson
  • Patent number: 5307964
    Abstract: Disclosed is an aerosol extension for use with a pressurized container in domestic, industrial and general spray applications. The pressurized container includes a cylindrically-shaped body, a planar bottom and a convex top. The body includes a propellant and a product to be dispensed therefrom. The top has a circular opening for receiving an actuator and a dispensing valve. The actuator and dispensing valves defines a dispensing system for delivering the product as a spray, a mist, a stream or a powder. The actuator, in turn, defines an outlet orifice for delivering the product held within the pressurized container. The improvement comprises a clamping member, which is joined and releasably locked to the dispensing system. A flexible, elongated, tubular member is provided for accurately delivering products contained in the pressurized container from the dispensing system to intended locations otherwise difficult to reach with the products.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: May 3, 1994
    Assignee: John B. Toth
    Inventor: John B. Toth
  • Patent number: 5304509
    Abstract: A two-step back-side hydrogenation process includes the steps of first bombarding the back side of the silicon substrate with hydrogen ions with intensities and for a time sufficient to implant enough hydrogen atoms into the silicon substrate to potentially passivate substantially all of the defects and impurities in the silicon substrate, and then illuminating the silicon substrate with electromagnetic radiation to activate the implanted hydrogen, so that it can passivate the defects and impurities in the substrate. The illumination step also annihilates the hydrogen-induced defects. The illumination step is carried out according to a two-stage illumination schedule, the first or low-power stage of which subjects the substrate to electromagnetic radiation that has sufficient intensity to activate the implanted hydrogen, yet not drive the hydrogen from the substrate.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: April 19, 1994
    Assignee: Midwest Research Institute
    Inventor: Bhushan L. Sopori
  • Patent number: 5300704
    Abstract: A process of using fast pyrolysis in a carrier gas to convert a plastic waste feedstream having a mixed polymeric composition in a manner such that pyrolysis of a given polymer to its high value monomeric constituent occurs prior to pyrolysis of other plastic components therein comprising: selecting a first temperature program range to cause pyrolysis of said given polymer to its high value monomeric constituent prior to a temperature range that causes pyrolysis of other plastic components; selecting a catalyst and support for treating said feed streams with said catalyst to effect acid or base catalyzed reaction pathways to maximize yield or enhance separation of said high value monomeric constituent in said temperature program range; differentially heating said feed stream at a heat rate within the first temperature program range to provide differential pyrolysis for selective recovery of optimum quantities of the high value monomeric constituent prior to pyrolysis of other plastic components; separating th
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: April 5, 1994
    Assignee: Midwest Research Institute
    Inventors: Robert J. Evans, Helena L. Chum
  • Patent number: 5275944
    Abstract: A purified low molecular weight cellulase endoglucanase I having a molecular weight of between about 57,420 to about 74,580 daltons from Acidothermus cellulolyticus (ATCC 43068). The cellulase is water soluble, possesses both C.sub.1 and C.sub.x types of enzyme activity, a high degree of stability toward heat, and exhibits optimum temperature activity at about 83.degree. C. at pH's from about 2 to about 9, and in inactivation temperature of about 110.degree. C. at pH's from about 2 to about 9.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: January 4, 1994
    Assignee: Midwest Research Institute
    Inventors: Michael E. Himmel, William S. Adney, Melvin P. Tucker, Karel Grohmann
  • Patent number: 5261143
    Abstract: A device maintains an elongated, generally, T-shaped, spar track for a free running of mating slides and boltropes under loadings of a sail through cleaning and maintenance. A first internal surface region of the T-shaped track opening is comparatively wider than a second internal surface region of the track opening. The second internal surface region merges with a third external region of the track opening. The improvement comprises a compressible, flexible, pliable member for cleaning, lubricating and maintenance of the T-shaped track opening. The pliable member is prefolded and united to provide a T-shape corresponding to the shape of the track opening. The pliable member is provided with a T-shape to facilitate insertion of the pliable member into the track opening and to enable the pliable member to be in slidable engagement with the track opening.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: November 16, 1993
    Assignee: John B. Toth
    Inventor: John B. Toth
  • Patent number: 5250427
    Abstract: A process is described for converting organic materials (such as biomass wastes) into a bioplastic suitable for use as a biodegradable plastic. In a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide and hydrogen, followed by photosynthetic bacterial assimilation of the gases into cell material. The process is ideally suited for waste recycling and for production of useful biodegradable plastic polymer.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: October 5, 1993
    Assignee: Midwest Research Institute
    Inventors: Paul F. Weaver, Pin-Ching Maness
  • Patent number: 5216149
    Abstract: A process of using fast pyrolysis in a carrier gas to convert a plastic waste feedstream having a mixed polymeric composition in a manner such that pyrolysis of a given polymer to its high value monomeric constituent occurs prior to pyrolysis of other plastic components therein comprising: selecting a first temperature program range to cause pyrolysis of said given polymer to its high value monomeric constituent prior to a temperature range that causes pyrolysis of other plastic components; selecting a catalyst and support for treating said feed streams with said catalyst to effect acid or base catalyzed reaction pathways to maximize yield or enhance separation of said high value monomeric constituent in said temperature program range; differentially heating said feed stream at a heat rate within the first temperature program range to provide differential pyrolysis for selective recovery of optimum quantities of the high value monomeric constituent prior to pyrolysis of other plastic components; separating th
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: June 1, 1993
    Assignee: Midwest Research Institute
    Inventors: Robert J. Evans, Helena L. Chum
  • Patent number: 5202150
    Abstract: A method for impregnating a porous, non-metallic construction material with a solid phase-change material is described. The phase-change material in finely divided form is spread onto the surface of the porous material, after which the porous material is exposed to microwave energy for a time sufficient to melt the phase-change material. The melted material is spontaneously absorbed into the pores of the porous material. A sealing chemical may also be included with the phase-change material (or applied subsequent to the phase-change material) to seal the surface of the porous material. Fire retardant chemicals may also be included with the phase-change materials. The treated construction materials are better able to absorb thermal energy and exhibit increased heat storage capacity.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: April 13, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David K. Benson, Richard W. Burrows
  • Patent number: 5198263
    Abstract: A high rate, low-temperature deposition of amorphous carbon films is produced by PE-CVD in the presence of a fluorinated or other halide gas. The deposition can be performed at less than 100.degree. C., including ambient room temperature, with a radio frequency plasma assisted chemical vapor deposition process. With less than 6.5 atomic percent fluorine incorporated into the amorphous carbon film, the characteristics of the carbon film, including index of refraction, mass density, optical clarity, and chemical resistance are within fifteen percent (15%) of those characteristics for pure amorphous carbon films, but the deposition rates are high.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: March 30, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Byron L. Stafford, C. Edwin Tracy, David K. Benson, Arthur J. Nelson
  • Patent number: 5194349
    Abstract: A process for preparing a multiple level logic optical memory disks which are erasable upon heating when ion-beam hydrogenation is used for writing informatin on the disk.The process comprises depositing an amorphous film selected from the group consisting of silicon hydride, silicon carbon hydride and silicon nitrogen hydride on a glass substrate using plasma enhanced chemical vapor deposition at temperatures sufficient to ensure good adhesion and high film quality and an optical bandgap of between aboout 1.55 and about 2.0 eV; writing information on these disks by using a laser beam to selectively heat spots of the film to expel hydrogen and change the bandgap and optical absorption of the film; and using a laser beam at a sufficient nm wavelength in order to detect information stored on these disks.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: March 16, 1993
    Assignee: Midwest Research Institute
    Inventors: Y. Simon Tsuo, Jack L. Stone
  • Patent number: 5175975
    Abstract: An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially "point" or "line" contacts with the metal wall sheets. In the case of monolithic spacers that form "line" contacts, two such spacers with the line contacts running perpendicular to each other form effectively "point" contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: January 5, 1993
    Assignee: Midwest Research Institute
    Inventors: David K. Benson, Thomas F. Potter
  • Patent number: 5166761
    Abstract: A multiple wavelength LED having a monolithic cascade cell structure comprising at least two p-n junctions, wherein each of said at least two p-n junctions have substantially different band gaps, and electrical connector means by which said at least two p-n junctions may be collectively energized; and wherein said diode comprises a tunnel junction or interconnect.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: November 24, 1992
    Assignee: Midwest Research Institute
    Inventors: Jerry M. Olson, Sarah R. Kurtz
  • Patent number: 5157893
    Abstract: Improved compact insulation panel is provided which is comprised of two adjacent metal sheets spaced close together with a plurality of spherical, or other discretely shaped, glass or ceramic beads optimally positioned between the sheets to provide support and maintain the spacing between the metal sheets when the gases therebetween are evacuated to form a vacuum. These spherical glass beads provide the maximum support while minimizing thermal conductance. In its preferred embodiment; these two metal sheets are textured with ribs or concave protrusions in conjunction with the glass beads to maximize the structural integrity of the panels while increasing the spacing between beads, thereby reducing the number of beads and the number of thermal conduction paths.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: October 27, 1992
    Assignee: Midwest Research Institute
    Inventors: David K. Benson, Thomas F. Potter
  • Patent number: 5140718
    Abstract: The spar track cleaning and maintenance device comprises: a compressible, working surface for cleaning, lubricating and maintenance of a longitudinally extending, irregularly-shaped, spherical opening defined by a spar track; at least a first compressible, resiliently flexible, cordage member for inserting into the spar track opening and for slidably engaging an internal surface of the track opening; and a control means for adjustably shaping the working surface and the first cordage member upon being inserted within the spar track opening.The control means adjustably shapes the working surface and the first cordage member which is integrally formed with the working surface to allow the working surface and the first cordage member to compress and substantially conform to the irregular spherical shape of the internal track surface and be in slidable engagement therewith.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: August 25, 1992
    Inventor: John B. Toth
  • Patent number: 5110735
    Abstract: A substantially purified high molecular weight cellulase enzyme having a molecular weight of between about 156,000 to about 203,400 daltons isolated from the bacterium Acidothermus cellulolyticus (ATCC 43068) and a method of producing it are disclosed. The enzyme is water soluble, possesses both C.sub.1 and C.sub.x types of enzymatic activity, has a high degree of stability toward heat and exhibits both a high optimum temperature activity and high inactivation characteristics.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: May 5, 1992
    Assignee: Midwest Research Institute
    Inventors: Melvin P. Tucker, Karel Grohmann, Michael E. Himmel, Ali Mohagheghi
  • Patent number: 5107649
    Abstract: An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially "point" or "line" contacts with the metal wall sheets. In the case of monolithic spacers that form "line" contacts, two such spacers with the line contacts running perpendicular to each other form effectively "point" contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: April 28, 1992
    Assignee: Midwest Research Institute
    Inventors: David K. Benson, Thomas F. Potter
  • Patent number: 5041361
    Abstract: A method of providing and developing a resist on a substrate for constructing integrated circuit (IC) chips includes the following steps: of depositing a thin film of amorphous silicon or hydrogenated amorphous silicon on the substrate and exposing portions of the amorphous silicon to low-energy oxygen ion beams to oxidize the amorphous silicon at those selected portions. The nonoxidized portions are then removed by etching with RF-excited hydrogen plasma. Components of the IC chip can then be constructed through the removed portions of the resist. The entire process can be performed in an in-line vacuum production system having several vacuum chambers. Nitrogen or carbon ion beams can also be used.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: August 20, 1991
    Assignee: Midwest Research Institute
    Inventor: Y. Simon Tsuo
  • Patent number: 4964995
    Abstract: A process is disclosed for separating low molecular weight components from complex aqueous organic mixtures. The process includes preparing a separation solution of supercritical carbon dioxide with an effective amount of an entrainer to modify the solvation power of the supercritical carbon dioxide and extract preselected low molecular weight components. The separation solution is maintained at a temperature of at least about 70.degree. C. and a pressure of at least about 1,500 psi. The separation solution is then contacted with the organic mixtures while maintaining the temperature and pressure as above until the mixtures and solution reach equilibrium to extract the preselected low molecular weight components from the organic mixtures. Finally, the entrainer/extracted components portion of the equilibrium mixture is isolated from the separation solution.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: October 23, 1990
    Assignee: Midwest Research Institute
    Inventors: Helena L. Chum, Giuseppe Filardo
  • Patent number: 4960675
    Abstract: Disclosed is a hydrogen ion microlithography process for use in microelectronic fabrication and semiconductor device processing. The process comprises the steps of providing a single layer of either an amorphous silicon or hydrogenated amorphous silicon material. A pattern is recorded in a selected layer of amorphous silicon or hydrogenated amorphous silicon materials by preferentially implanting hydrogen ions therein so as to permit the selected layer to serve as a mask-resist wafer suitable for subsequent development and device fabrication. The layer is developed to provide a surface pattern therein adaptable for subsequent use in microelectronic fabrication and semiconductor device processing.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: October 2, 1990
    Assignee: Midwest Research Institute
    Inventors: Y. Simon Tsuo, Satyen K. Deb
  • Patent number: H1149
    Abstract: A fermentation reactor and method for fermentation of materials having greater than about 10% solids. The reactor includes a rotatable shaft along the central axis, the shaft including rods extending outwardly to mix the materials. The reactor and method are useful for anaerobic digestion of municipal solid wastes to produce methane, for production of commodity chemicals from organic materials, and for microbial fermentation processes.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: March 2, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Charles E. Wyman, Karel Grohmann, Michael E. Himmel, Christopher J. Richard