Patents Assigned to Foundation
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Patent number: 5290349Abstract: The present invention relates to the production of high tensile strength, solvent-spun cellulose fiber which is stable in alkaline solutions. More particularly, the invention relates to a process in which cellulose is solubilized in a zinc chloride solution then extruded into a coagulation medium in which the cellulose fibers form. The fibers are removed from the coagulation medium, treated to remove the coagulation medium, stretched and recrystallized in water, thus forming the high tensile strength, solvent-spun cellulose fibers.Type: GrantFiled: July 22, 1991Date of Patent: March 1, 1994Assignee: Purdue Research Foundation, Division of Sponsored ProgramsInventor: Li Fu Chen
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Patent number: 5290397Abstract: A resist pattern on a substrate is formed using an imageable resist layer on the surface of a substrate. The imageable resist layer comprises a silicon-incorporated polystyrene-diene block copolymer having a silicon weight percent of at least about 5 percent. The imageable layer is prepared by reacting a polystyrene-diene block copolymer with a silicon-containing compound in the presence of a platinum catalyst. In a preferred embodiment, the poly(styrene)-diene block copolymers are hydrosilylated by hydrosiloxanes using a platinum-divinyl tetramethyl disiloxane catalyst.Type: GrantFiled: August 21, 1992Date of Patent: March 1, 1994Assignee: Cornell Research Foundation, Inc.Inventors: Christopher K. Ober, Allen H. Gabor, Eric A. Lehner, Guoping Mao, Lizabeth A. Schneggenburger
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Patent number: 5290749Abstract: A method of selectively inhibiting growth of unwanted plants in a plot of soil is provided comprising the application of a plant protein hydrolysate to the plot of soil, prior to emergence of the unwanted plants and at a concentration of application which inhibits the growth of the unwanted plants.Type: GrantFiled: August 3, 1993Date of Patent: March 1, 1994Assignees: Iowa State University Research Foundation, Inc., Grain Processing CorporationInventors: Nick E. Christians, John T. Garbutt, Dianna Liu
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Patent number: 5288870Abstract: The present invention relates to a process for the preparation of specifically labelled TTX of high specific activity. In the present process, TTX is oxidized by use of the Pfitzer-Moffat method or Fenton's reagent and the aldehyde obtained is hydrated. The hydrated aldehyde is reduced with alkali metal o alkaline earth metal borotritide. The radioactive TTX so obtained, quite surprisingly, has a specific activity many times greater than previously prepared radioactive TTX.Type: GrantFiled: November 18, 1991Date of Patent: February 22, 1994Assignee: Research Foundation of the State University of New YorkInventors: Chien-yuan Kao, Biqi Wu
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Patent number: 5288621Abstract: Disclosed for the first time is the isolation, sequence, and expression cloning of a cDNA encoding for pituitary thyrotropin-releasing hormone receptor, as well as the amino acid sequence for the receptor per se.Type: GrantFiled: December 14, 1990Date of Patent: February 22, 1994Assignee: Cornell Research Foundation, Inc.Inventors: Marvin C. Gershengorn, Richard E. Straub
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Patent number: 5288634Abstract: This invention relates in part to the use of osmoticants to provide desiccation tolerance to growth producing cells of microorganisms upon drying and reconstitution.This invention also relates in part to the discovery of liquid fermentation media permitting production of high levels of conidia of Trichoderma harzianum in liquid fermentation, and modifications to these media that produce conidia that are resistant to desiccation and that provide enhanced biocontrol efficacy.Type: GrantFiled: November 13, 1992Date of Patent: February 22, 1994Assignee: Cornell Research Foundation, Inc.Inventors: Gary E. Harman, Xixuan Jin, Thomas E. Stasz, George P. Peruzzotti, A. Carl Leopold, Alan G. Taylor
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Patent number: 5289010Abstract: Plasma source ion implantation is carried out within an evacuated chamber having a target, such as a semiconductor wafer, supported on a target stage, with pulses of high voltage applied to the target periodically to implant ions from a plasma into the target. The ions in the plasma are purified after formation of the plasma by passing the plasma through an ion cyclotron resonance system composed of excitation electrodes and ion collector electrodes surrounding an ion purification region, with a magnet providing a unidirectional magnetic field through the ion purification region. A radio frequency time varying electric field from the excitation electrodes drives unwanted ions having charge-to-mass ratios greater than or less than that of the desired ion species to resonance with the electric field. During resonance, the undesired ions are driven outwardly in expanding spirals until reaching the ion collector plates, where the unwanted ions are removed.Type: GrantFiled: December 8, 1992Date of Patent: February 22, 1994Assignee: Wisconsin Alumni Research FoundationInventor: Juda L. Shohet
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Patent number: 5288498Abstract: Compositions and methods of manufacture for producing a medicament composition capable of absorption through the mucosal tissues of the mouth, pharynx, and esophagus. The present invention relates to such compositions and methods which are useful in administering lipophilic and nonlipophilic drugs in a dose-to-effect manner such that sufficient drug is administered to produce precisely a desired effect. The invention also relates to manufacturing techniques that enable therapeutic agents to be incorporated into nondissolvable drug containment matrixes which are capable of releasing the drug within a patient's mouth. An appliance or holder is preferably attached to the drug containment matrix. Employing the present invention the drug may be introduced into the patient's bloodstream almost as fast as through injection, and much faster than using the oral administration route, while avoiding the negative aspects of both of these methods.Type: GrantFiled: September 5, 1989Date of Patent: February 22, 1994Assignee: University of Utah Research FoundationInventors: Theodore H. Stanley, Brian Hague
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Patent number: 5289407Abstract: In a method of high density (>10.sup.12 bits/cc) optical recording of information in a three-dimensional multilayered format, information is written in a photopolymer as submicron volume elements of altered index of refraction. The index change results from alteration of the photopolymer induced by two-photon excitation of the photo-sensitizer at the waist of a highly focused beam from a subpicosecond colliding pulse modelocked laser. Quadratic dependence of two-photon excitation on incident instantaneous intensity serves to confine crosslinking of the polymer to the focal volume; hence, bit array layers may be written with thicknesses on the order of the confocal parameter. As an example, eight well resolved bit planes can be written in a olymer film about 30 microns thick. Information written in this manner may be read with sufficient axial resolution by differential interference contrast (DIC) or confocal microscopy.Type: GrantFiled: July 22, 1991Date of Patent: February 22, 1994Assignee: Cornell Research Foundation, Inc.Inventors: James H. Strickler, Watt W. Webb
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Patent number: 5288618Abstract: A galactomannan heteropolysaccharide is prepared by fermentation of a previously unknown microorganism, named Erwinia sp. ATCC No. 55046. The polysaccharide has valuable properties as a thickening, suspending, stabilizing and lubricating agent in aqueous systems. It has a chemical composition of mannose, galactose and galacturonic acid in the approximate molar ratio of 5:3:2. The polysaccharide can be produced in high yield and volumetric productivity from a submerged culture fermentation of a low-cost, lactose-containing whey or whey permeate medium.Type: GrantFiled: April 29, 1992Date of Patent: February 22, 1994Assignee: Wisconsin Alumni Research FoundationInventors: Robert S. Hardin, James H. Flatt, Douglas C. Cameron
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Patent number: 5288186Abstract: An apparatus for high-pressure waterjet assisted machining includes a drive motor, spindle and rotary cutting tool with cutting inserts. The apparatus further includes a high-pressure intensifier pump providing cutting fluid at a pressure greater than 50,000 psi. A cutting fluid conduit system in the rotary cutting tool includes a main flow channel, a distribution manifold, a plurality of radially extending feed channels and a plurality of cooperating nozzles for delivering fluid behind the cutting inserts. The cutting fluid then passes through one or more apertures in the inserts into an interface defined by the inserts of the cutting tool and a chip being cut from the workpiece.Type: GrantFiled: September 21, 1992Date of Patent: February 22, 1994Assignee: University of Kentucky Research FoundationInventor: Radovan Kovacevic
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Patent number: 5287082Abstract: A submicron resistor having negligible parasitic capacitance includes an isolated released beam carried on a single crystal silicon wafer. The resistor is fabricated by defining a resistor region in the substrate, doping the region to produce the desired resistivity, and etching around the region to produce a resistive island. The island is then isolated from the substrate by oxidation, and is released by removing the oxide to produce an isolated, released resistor beam.Type: GrantFiled: July 2, 1992Date of Patent: February 15, 1994Assignee: Cornell Research Foundation, Inc.Inventors: Susanne C. Arney, Noel C. MacDonald, Jun J. Yao
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Patent number: 5286996Abstract: A self-aligned process for fabricating high performance bipolar transistors for integrated circuits includes the formation of a collector contact and intrinsic collector region within an opening at the face of a semiconductor substrate. In particular, layers of oxide and polysilicon are formed on the surface of a substrate. An opening is then formed in both layers followed by the implantation of a buried collector region into the substrate at the exposed substrate face through the opening. Polysilicon contacts to the buried layer are then formed on the sidewalls of the opening. These contacts join with the polysilicon layer to form a collector contact. An oxide is then grown on the collector contact. A monocrystalline intrinsic collector is then formed from the exposed substrate face adjacent said collector contact. In this manner, the buried collector, collector contact and intrinsic collector are all formed in a self-aligned manner.Type: GrantFiled: December 31, 1991Date of Patent: February 15, 1994Assignee: Purdue Research FoundationInventors: Gerold W. Neudeck, Rashid Bashir
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Patent number: 5286522Abstract: The present method induces an oxidation-proof ferric phosphate coating on iron sulfide such as pyrite and marcasite. The method includes the steps of placing the pyrite to be treated in a reaction vessel and leaching the pyrite with a coating composition including water, an oxidizing agent and a phosphate coating agent. Examples of oxidizing agents include hydrogen peroxide, sodium hypochlorite, potassium hypochlorite and mixtures thereof. The phosphate coating agent may be potassium dihydrogen phosphate. In order to ensure the formation of the stable coating, the leaching is performed at a pH of substantially 5 and at a temperature of substantially 40.degree. C. Additionally, the oxidizing agent is maintained at a concentration of substantially 0.1% by weight of the coating composition while the concentration of the phosphate coating agent is maintained at at least substantially 10.sup.-4 M/l.Type: GrantFiled: November 19, 1992Date of Patent: February 15, 1994Assignee: University of Kentucky Research FoundationInventors: V. P. Evangelou, Xiao Huang
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Patent number: 5285769Abstract: An orchard heater including a base and a pulse-jet engine rotatably mounted on the base. The pulse-jet engine exhausts a heated moisture-laden exhaust stream through an exhaust tube. The exhaust stream is directed tangentially to create a torque which automatically rotates the pulse-jet and causes lateral omnidirectional dispersion of the exhaust stream. The orchard heater utilizes the energy released from the combustion process to rotate the pulse-jet engine and to vaporize and atomize water.Type: GrantFiled: October 13, 1992Date of Patent: February 15, 1994Assignee: Washington State University Research FoundationInventor: Stanislaw Wojcicki
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Patent number: 5287169Abstract: A method and apparatus for a contactless mode of electroreflectance (ER) which utilizes a condenser-like system, of which the front electrode is light transparent, i.e., for instance, consists of a transparent conductive coating on a transparent substrate which is separated from the sample surface by a thin layer of air. With the use of the method and apparatus of this invention, the contactless electroreflectance spectra could be measured at 300K from a number of materials including semi-insulating bulk GaAs, bulk Si, bulk Hg.sub.0.75 Cd.sub.0.25 Te, a GaAs structure with large uniform electric field and a GaAs/GaAlAs coupled double quantum well.Type: GrantFiled: March 31, 1992Date of Patent: February 15, 1994Assignee: Brooklyn College Research and Development FoundationInventors: Fred H. Pollak, Xiaoming Yin
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Patent number: 5285750Abstract: Preparation of chicken embryo allantoic fluids for animal health requires opening the eggshell by cutting, drilling or punching methods. Laser cutting and drilling is used as an alternative to known processes. Both CO.sub.2 and Nd:YAG lasers are employed. A focused CO.sub.2 laser beam at a power of 200 watts in conjunction with an X-Y motion table produced 25 mm diameter "clean-cuts" in eggshells with a cutting time of 0.5 seconds per egg. The material removal mechanism was vaporization. When an axicon/lens combination is used with a CO.sub.2 laser, the cutting time was further reduced to 0.2 seconds per egg and the mechanism of material removal is changed from vaporization to decomposition of the eggshell into fine powders. Small holes, typical diameters of 0.5 mm to 1 mm are generated in the eggshell using the pulsed Nd:YAG laser.Type: GrantFiled: June 7, 1993Date of Patent: February 15, 1994Assignee: Iowa State University Research Foundation, Inc.Inventors: P. A. Molian, Jerry L. Hall, M. J. Hsu
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Patent number: 5286901Abstract: Precursors and methods for the synthesis of mono- and difunctionalized acetylenes are described. The invention includes novel tricoordinate iodonium transfer reagents and novel alkynyldi(phenyliodonium) salts, both of which are precursors for the functionalized acetylenes. The iodonium transfer reagents take the general form of mixed iodonium sulfonates PhI.sup.+ (X)OSO.sub.2 R.sub.f, where X may be OAc, NHAc, NCO, or CN. These mixed iodonium sulfonates are produced by reaction of iodosobenzene with certain substituted trimethylsilanes.To make the alkynyldi(phenyliodonium) salt PhI.sup.+ C.tbd.CI.sup.+ Ph.cndot.2 R.sub.f SO.sub.3.sup.-,a mixed iodonium sulfonate is reacted with a bistin acetylene of the kind R'.sub.3 SnC.tbd.CSnR".sub.3. Alternatively, the reaction may be performed with disubstituted tin diacetylenes to produce PhI.sup.+ C.tbd.C-C.tbd.CI.sup.+ Ph.cndot.2 R.sub.f SO.sub.3.sup.- to produce a dialkynyldi(phenyliodonium) salt.Type: GrantFiled: July 19, 1991Date of Patent: February 15, 1994Assignee: University of Utah Research FoundationInventors: Peter J. Stang, Charles M. Crittell, Bobby L. Williamson, Viktor Zhdankin
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Patent number: 5285675Abstract: A method of measuring the flow and composition of a fluid or mixture of fluids through a system by determining the temperature, pressure and speed of sound in the fluid or mixture of fluids in the system and calculating the flow, molar density and average molecular weight of the fluid from the equation: ##EQU1## wherein: ##EQU2## c=speed of sound P=pressure of the fluidT=temperature of the fluid.rho.=molecular density of the fluidM=average molecular weight of the fluid.phi.=velocity potentialt=time.Type: GrantFiled: June 5, 1992Date of Patent: February 15, 1994Assignee: University of Florida Research Foundation, Inc.Inventors: Samuel O. Colgate, Kenneth C. McGill
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Patent number: D344487Type: GrantFiled: July 7, 1992Date of Patent: February 22, 1994Assignee: The Ishida FoundationInventor: Futoshi Iwamoto