Patents Assigned to Iowa State University
  • Apparatus, methods, and systems for computer information transfer
    Patent number: 4644496
    Abstract: A network of computing nodes is connected by communication channels into fully-interconnected units and groups of units. Each unit has one and only one direct connection to each other unit in a group, and any one computing node in any unit has a direct connection to at most one other unit. The nodes are suitably computing networks themselves so there can be any number of levels of recursion. In a method of routing and transferring information, each node is given an address having address portions respectively identifying its location at each level of recursion. The information is sent from that port of the sending node which has a port identification identical to the highest order address portion in the destination address which is different from the corresponding address portion of the sending computing node.
    Type: Grant
    Filed: January 11, 1983
    Date of Patent: February 17, 1987
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Barry A. Andrews
  • Real time speech formant analyzer and display
    Patent number: 4641343
    Abstract: A speech analyzer for interpretation of sound includes a sound input which converts the sound into a signal representing the sound. The signal is passed through a plurality of frequency pass filters to derive a plurality of frequency formants. These formants are converted to voltage signals by frequency-to-voltage converters and then are prepared for visual display in continuous real time. Parameters from the inputted sound are also derived and displayed. The display may then be interpreted by the user. The preferred embodiment includes a microprocessor which is interfaced with a television set for displaying of the sound formants. The microprocessor software enables the sound analyzer to present a variety of display modes for interpretive and therapeutic used by the user.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: February 3, 1987
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: George E. Holland, Walter S. Struve, John F. Homer
  • Organopalladium additions to alkenyl- and methylenecyclopropanes and alkenyl- and methylenecyclobutanes
    Patent number: 4632996
    Abstract: (Pi-allyl)palladium compounds are prepared by organopalladium addition to alkenyl- or methylenecyclopropanes or alkenyl- or methylenecyclobutanes. The reaction is conducted in the presence of a palladium salt and involves a novel ring-opening process and a subsequent rearrangement to provide a regioselective route to (pi-allyl)palladium compounds.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: December 30, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Richard C. Larock, Sudarsanan Varaprath
  • Medical drainage apparatus
    Patent number: 4626246
    Abstract: A medical drainage apparatus is provided for draining surgical wounds or internal organs or cavities. The apparatus comprises a pair of flexible pleated tubes which are adapted to be connected to a pair of drainage tubes which extend from the body, a relatively rigid Y connector which is connected to the flexible tubes, and a relatively rigid bridge which extends over the flexible tubes and which is adapted to be attached to the body and to hold the Y connector.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: December 2, 1986
    Assignee: Iowa State University Research Foundation
    Inventor: John G. Verkade
  • Moisture measurement apparatus and method
    Patent number: 4616425
    Abstract: Apparatus and method for measuring the moisture content of wood and paper products utilizing the dependency of the resistance or capacitance of such products upon moisture content. A resistance or capacitance-controlled oscillator circuit is completed by electrical connection to a product. Electrical connection of the resistance-controlled oscillator embodiment is accomplished by either application of a conducting contact grid pattern to a product or by forming a parallel plate probe incorporating the product therein. Electrical connection of the capacitance-controlled oscillator embodiment may also be accomplished by forming a parallel plate probe incorporating the product therein or by insertion of a plurality of conductive cylinders in parallel combination into flutes of a corrugated paperboard product when such a product is to be subject to measurement.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: October 14, 1986
    Assignee: Iowa State University Research Foundation
    Inventor: Stanley G. Burns
  • Method of forming magnetostrictive rods from rare earth-iron alloys
    Patent number: 4609402
    Abstract: Rods of magnetrostructive alloys of iron with rare earth elements are formed by flowing a body of rare earth-iron alloy in a crucible enclosed in a chamber maintained under an inert gas atmosphere, forcing such molten rare-earth-iron alloy into a hollow mold tube of refractory material positioned with its lower end portion within the molten body by means of a pressure differential between the chamber and mold tube and maintaining a portion of the molten alloy in the crucible extending to a level above the lower end of the mold tube so that solid particles of higher melting impurities present in the alloy collect at the surface of the molten body and remain within the crucible as the rod is formed in the mold tube.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: September 2, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: O. Dale McMasters
  • Aminooxyacetic acid (AOA) as a plant growth inhibitor
    Patent number: 4608076
    Abstract: A method of inhibiting plant height growth without having any significant impact on flowering, which comprises applying to the above ground portion of the plant at a point in time when the plant is beyond the seed leaf stage, and at least at approximately at the first true leaf stage, a small but growth inhibiting amount of aminooxyacetic acid.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: August 26, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Richard J. Gladon, David S. Koranski
  • Chloronitroalkane insecticides
    Patent number: 4594360
    Abstract: Compounds of the formula ##STR1## wherein X is a C.sub.1 to C.sub.3 alkoxy group, Y is selected from the group consisting of halogens, C.sub.1 to C.sub.4 alkyl, and C.sub.1 to C.sub.3 alkoxy, and R.sub.1, R.sub.2 and R.sub.3 are selected from the group of chloro, nitro and hydrogen, with at least one of R.sub.1, R.sub.2 and R.sub.3 being chloro, and at least one of R.sub.1, R.sub.2 and R.sub.3 being nitro, are useful in combatting insects.
    Type: Grant
    Filed: November 23, 1984
    Date of Patent: June 10, 1986
    Assignee: Iowa State University Research Foundation & Inc.
    Inventor: Joel R. Coats
  • Semi-transparent solar energy thermal storage device
    Patent number: 4580571
    Abstract: A visually transmitting solar energy absorbing thermal storage module includes a thermal storage liquid containment chamber defined by an interior solar absorber panel, an exterior transparent panel having a heat mirror surface substantially covering the exterior surface thereof and associated top, bottom and side walls. Evaporation of the thermal storage liquid is controlled by a low vapor pressure liquid layer that floats on and seals the top surface of the liquid. Porous filter plugs are placed in filler holes of the module. An algicide and a chelating compound are added to the liquid to control biological and chemical activity while retaining visual clarity. A plurality of modules may be supported in stacked relation by a support frame to form a thermal storage wall structure.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: April 8, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: John F. McClelland
  • Method of generating chemiluminescent light
    Patent number: 4575433
    Abstract: A method of chemiluminescently determining a sulfide which is either hydrogen sulfide or methyl mercaptan by reacting the sulfide with chlorine dioxide at low pressure and under conditions which allow a longer reaction time in emission of a single photon for every two sulfide containing species, and thereafter, chemiluminescently detecting and determining the sulfide. The invention also relates not only to the detection method, but the novel chemical reaction that generates chemiluminescent light and a specifically designed chemiluminescence detection cell for the reaction.
    Type: Grant
    Filed: January 3, 1985
    Date of Patent: March 11, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Stanford R. Spurlin, Edward S. Yeung
  • Synthesis of thiophene-containing prostaglandin endoperoxide apparatus
    Patent number: 4563537
    Abstract: New organopalladium reactions involving the addition of thienylpalladium compounds to strained bicyclic alkenes, and subsequent chain extension reactions employing the chemistry of organopalladium compounds are disclosed. By these techniques a large number of bicyclic prostaglandin analogs are prepared, which are useful as inhibitors of arachidonic acid induced blood platelet aggregation, and are specific inhibitors of thromboxane synthetase.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: January 7, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Richard C. Larock
  • Bore hole rock shear tester and method for using same
    Patent number: 4557147
    Abstract: The bore hole rock shear testing device of the present invention comprises a case assembly having a longitudinal axis, a driving block, at least one wedge member, and a restraint member. The wedge member is positioned between the restraint member and the driving block and includes a rock engaging surface facing radially outwardly from the longitudinal axis of the case assembly. The driving block and the wedge member have complimentary tapered surfaces which cause the rock engaging surface to be urged radially outwardly when the wedge member is compressed or squeezed between the driving block and the restraint member. Power means are provided for moving the driving block toward the restraint member, and a restraint mechanism selectively holds the restraint member against movment.
    Type: Grant
    Filed: May 14, 1984
    Date of Patent: December 10, 1985
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John R. Rohde, John M. Pitt
  • Net energy transfer measurement methods, apparatus and systems with solar energy and control applications
    Patent number: 4555764
    Abstract: Heat flux sensors respectively painted black and white and mounted to a passive solar energy window intercept solar radiation and change the temperature of part of the window. The sensors, and differentially connected thermocouples attached to them, couple data to an electronic computer by which the solar radiation, reradiation, and conduction/convection thermal loss through the undisturbed balance of the window can be deduced. The computer outputs the net energy transfer NET to a recorder, a two-state indicator, and a window insulation control unit. The circuitry of the control unit responds to an ordinary thermostat and the NET from the computer to produce a condition signal, senses the position of the insulation, and repositions the insulation when necessary in response to the condition signal.
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: November 26, 1985
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Thomas H. Kuehn
  • Sulfide chemiluminescence detection
    Patent number: 4555491
    Abstract: A method of chemiluminescently determining a sulfide which is either hydrogen sulfide or methyl mercaptan by reacting the sulfide with chlorine dioxide at low pressure and under conditions which allow a longer reaction time in emission of a single photon for every two sulfide containing species, and thereafter, chemiluminescently detecting and determining the sulfide. The invention also relates not only to the detection method, but the novel chemical reaction and a specifically designed chemiluminescence detection cell for the reaction.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: November 26, 1985
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Stanford R. Spurlin, Edward S. Yeung
  • Method of inhibiting nitrification of ammonium nitrogen
    Patent number: 4552581
    Abstract: Phenylacetylene is added to agricultural field soil containing ammonium nitrogen fertilizer, thereby promoting nitrogen retention by inhibiting soil bacteria nitrification.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: November 12, 1985
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: John M. Bremner
  • Rose plant named Bucblu
    Patent number: PP5756
    Abstract: A new variety of hybrid tea rose plant having profuse production of violet-blue flowers of excellent color stability. The plant is also notable for the precociousness with which lateral buds develop and the survivability of the plant under winter conditions without cold weather protection.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: July 1, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Griffith J. Buck
  • Geranium plant named Orangeade
    Patent number: PP5757
    Abstract: A new variety of geranium plant distinguished by the scarlet color (Mandarin Red) of its flowers, its vigorous and floriferous growth under the high summer temperatures and humidities commonly found in Midwestern United States, and its strong field tolerance to foliar diseases such as Botrytis cinerea (gray mold).
    Type: Grant
    Filed: August 16, 1984
    Date of Patent: July 1, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Griffith J. Buck
  • Geranium plant named Troubadour
    Patent number: PP5758
    Abstract: A new variety of geranium plant distinguished by the bright scarlet color of its flowers, its ability to grow vigorously and flower profusely under high day/night temperatures and humidity, and its tolerance under field conditions to foliar diseases common to geraniums.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: July 1, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Griffith J. Buck
  • Geranium plant named La Sevillana
    Patent number: PP5759
    Abstract: A new variety of geranium plant distinguished by its profuse and vigorous flowering habit, its tolerance to foliar diseases in climates with high summer day and/or night temperatures and humidities, and the strong red color of its abundant flowers.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: July 1, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Griffith J. Buck
  • Rose plant named Bucred
    Patent number: PP5760
    Abstract: A new variety of shrub rose plant having a profuse and continuous production of medium-sized flowers of bright red coloration, the plant being free branching, bushy, and erect in its growth habit and exhibiting an ability to survive Midwestern winter temperatures without weather protection. The plant also shows good field tolerance to foliar diseases such as Blackspot and Powdery Mildew.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: July 8, 1986
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Griffith J. Buck