Patents Assigned to The University of Illinois
  • Patent number: 5321001
    Abstract: Plant defoliating compositions comprising .delta.-aminolevulinic acid and one or more chlorophyll biosynthesis modulators; and methods of making and using same.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: June 14, 1994
    Assignee: The Board of Trustees of The University of Illinois
    Inventor: Constantin A. Rebeiz
  • Patent number: 5294603
    Abstract: This invention is directed to didemnin derivatives, including N-acyl congeners of didemnin A (DA); several DDB-type analogues of DA in which either pyruvic acid has been replaced (with phenylpyruvic acid or alphaketobutyric acid) or proline at position 8 has been replaced [with L-azetidine-2-carboxylic acid (AZT), L-pipecolic acid (Pip), 1-amino-1-carboxylic cyclopentane (acc.sup.5), D-Pro or sarcosine (sar); and other cyclic depsipeptides related to the didemnins, which were isolated from a relatively polar extract of the tunicate T. solidum; namely the didemnins--X [(R)-3-hydroxy-decanoyl-(Gln).sub.3 -Lac-Pro didemnin A]; Y [(R)-3-hydroxy-decanoyl-(Gln).sub.4 -Lac-Pro didemnin A]; M (pGlu-Gln-Lac-Pro-didemnin A); N ([Tyr.sup.5 ] didemnin B); nordidemnin N ([Tyr.sup.5 ] nordidemnin B); and epididemnin A ([2S,4R-Hip.sup.2 ] didemnin A).
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: March 15, 1994
    Assignee: The Board of Trustees of The University of Illinois
    Inventor: Kenneth L. Rinehart
  • Patent number: 5262360
    Abstract: A method of forming a native oxide from an aluminum-bearing Group III-V semiconductor material is provided. The method entails exposing the aluminum-bearing Group III-V semiconductor material to a water-containing environment and a temperature of at least about 375.degree. C. to convert at least a portion of said aluminum-bearing material to a native oxide characterized in that the thickness of said native oxide is substantially the same as or less than the thickness of that portion of said aluminum-bearing Group III-V semiconductor material thus converted. The native oxide thus formed has particular utility in electrical and optoelectrical devices, such as lasers.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: November 16, 1993
    Assignee: The Board Of Trustees Of The University Of Illinois
    Inventors: Nick Holonyak, Jr., John M. Dallesasse
  • Patent number: 4841148
    Abstract: A thermally compensated tube scanner scanning tunneling microscope utilizes two concentric piezoelectric tubes, one for scanning and one for coarse translation as well as fine adjustment of sample position while in tunneling range. There are no mechanical components such as springs, levers, gears, or stepper motors which are known to result in considerable vibration sensitivity and thermal drift. Consequently, the standard mode of atomic resolution operation for the device is without vibration isolation and with a thermal drift of less than 1 angstrom per hour.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: June 20, 1989
    Assignee: The Board of Trustees of The University of Illinois
    Inventor: Joseph W. Lyding
  • Patent number: 4737510
    Abstract: Novel bioactive metabolites from the Caribbean sponge Agelas coniferin are disclosed. These compounds are generically referred to as halopyrroles. They exhibit antiviral and antibacterial properties, and, thus, are useful for various non-therapeutic and therapeutic purposes.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: April 12, 1988
    Assignee: The Board of Trustees of The University of Illinois
    Inventor: Kenneth L. Rinehart, Jr.
  • Patent number: 4639275
    Abstract: A method is disclosed for converting a multilayer semiconductor structure, that includes active semiconductor regions interposed between semiconductor barrier layers, into a disordered alloy by introduction of a specified disordering element into the multilayer structure. Devices made using the method are also disclosed.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: January 27, 1987
    Assignee: The Board of Trustees of The University of Illinois
    Inventor: Nick Holonyak, Jr.
  • Patent number: 4594603
    Abstract: A semiconductor device is disclosed, which includes a disordered alloy converted from at least a first active semiconductor region and a second semiconductor barrier layer that have been disordered by introduction of a disordering element selected from the group consisting of silicon and krypton such that the alloy exhibits a higher energy gap than the first active semiconductor region.
    Type: Grant
    Filed: January 24, 1985
    Date of Patent: June 10, 1986
    Assignee: Board of Trustees of The University of Illinois
    Inventor: Nick Holonyak, Jr.
  • Patent number: 4574280
    Abstract: An AC gas discharge logic device with two input electrodes and an output electrode isolated by dielectric material from a dischargeable gas. Upon coupling suitable signals to the input electrodes, the gas is discharged and a voltage level at the dielectric material associated with the input electrodes is established which is different than the initial voltage level at the dielectric material associated with the output electrode. The subsequent voltage level of the output electrode after the gas discharge thus approaches the established voltage level at the input electrodes. An AC gas discharge panel with a plurality of the aforementioned logic devices included within the panel structure.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: March 4, 1986
    Assignee: The Board of Trustees of The University of Illinois
    Inventor: Larry F. Weber
  • Patent number: 4511408
    Abstract: Silicon or krypton is used as a disordering element to selectively disorder layers in a heterojunction III-V semiconductor.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: April 16, 1985
    Assignee: The Board of Trustees of The University of Illinois
    Inventor: Nick Holonyak, Jr.
  • Patent number: 4496165
    Abstract: An adjustable collet is provided comprising a step collet, a plurality of machinable and removable jaws, and means for interlocking the jaws with the step collet. The interlocking means comprise counter-bored and threaded holes spaced on the face of the collet, and hollow bosses projecting from one surface of the jaws and aligned with counter-bored or counter-sunk holes on the opposite surface, the interlocking means being effected by mating the jaw bosses with the holes in the collet face and by engaging screws passing through the holes and bosses in the jaws to the threaded holes in the collet face. To further increase the capacity of the collet, extension bars are utilized that incorporate the above-described interlocking means.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: January 29, 1985
    Assignee: The Board of Trustees of The University of Illinois
    Inventors: Josef Schrekeis, Gerard P. Murphy
  • Patent number: 4412001
    Abstract: The present invention provides a novel means for the isolation of bacterial luciferase and a novel affinity resin useful in said isolation.
    Type: Grant
    Filed: December 3, 1981
    Date of Patent: October 25, 1983
    Assignee: Board of Trustees of The University of Illinois
    Inventors: Thomas O. Baldwin, Thomas F. Holzman
  • Patent number: 4369195
    Abstract: A textured soybean product is produced from full-fat soybean by hydrating whole soybean by treatment with a dilute alkaline solution; mixing the hydrated soybean with full-fat soy flour and equilibrating the moisture content thereof; and passing the mixture through an extrusion cooker. The textured product has excellent flavor, color, and appearance, and can be formulated into an all-vegetable ground meat analogue or it can be used as an extender in blends with ground meat.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: January 18, 1983
    Assignee: The University of Illinois Foundation
    Inventors: Alvin I. Nelson, Johnnie S. Leigh
  • Patent number: 4281086
    Abstract: Polymer bound multidentate complexes are prepared by reacting pendant benzyl chloride and benzyl iodide groups on a variety of polymer supports, including crosslinked polystyrene, with 3,3'-iminodiproprionitrile and reducing the nitrile groups by treatment with, for example, a boron hydride-tetrahydrofuran complex to form the amine. The amine is a precursor for other ligand systems; for example, the primary amine groups formed condense with an aldehyde or ketone to yield five coordinate Schiff base ligands. The polydentate amine ligand systems are useful for synthesis of chelating agents for sequestering metal ions from solution for purification or concentration purposes. Metal complexes of these ligands with manganese, iron, cobalt, nickel, copper, and zinc can be prepared which are useful as heterogeneous oxidation catalysts.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: July 28, 1981
    Assignee: The University of Illinois Foundation
    Inventors: John H. Gaul, Jr., Russell S. Drago
  • Patent number: 4239778
    Abstract: Novel azaprostanoic acid analogs of the formula ##STR1## wherein: R is C.sub.1 to C.sub.8 alkyl or benzyl; and a has a value of from 0 to 6 inclusive, and their pharmaceutically acceptable salts and esters. Preferred 13-aza and 15-aza compounds are active in the inhibition of arachidonic acid-induced platelet aggregation and, more specifically, are direct and specific antagonists of the activity of prostaglandin H.sub.2 and thromboxane A.sub.2.
    Type: Grant
    Filed: September 12, 1978
    Date of Patent: December 16, 1980
    Assignee: The University of Illinois Foundation
    Inventors: Duane L. Venton, Guy C. Le Breton, Steven E. Enke
  • Patent number: 4230828
    Abstract: Polymer bound multidentate complexes are prepared by reacting pendant benzyl chloride and benzyl iodide groups on a variety of polymer supports, including crosslinked polystyrene, with 3,3'-iminodiproprionitrile and reducing the nitrile groups by treatment with, for example, a boron hydride-tetrahydrofuran complex to form the amine. The amine is a precursor for other ligand systems; for example, the primary amine groups formed condense with an aldehyde or ketone to yield five coordinate Schiff base ligands. The polydentate amine ligand systems are useful for synthesis of chelating agents for sequestering metal ions from solution for purification or concentration purposes. Metal complexes of these ligands with manganese, iron, cobalt, nickel, copper, and zinc can be prepared which are useful as heterogeneous oxidation catalysts.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: October 28, 1980
    Assignee: The University of Illinois Foundation
    Inventors: John H. Gaul, Jr., Russell S. Drago
  • Patent number: 4225582
    Abstract: Live Bovine Herpesvirus A.T.C.C. VR-2003 is employed in vaccination of horses to confer immunity to infection by Equid Herpesvirus Type 1.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: September 30, 1980
    Assignee: The University of Illinois Foundation
    Inventor: Robert A. Crandell
  • Patent number: 4205000
    Abstract: The compound 1,2,5,6-dibenzo-9-oxa-[3.3.1]-bicyclonona-2,6-diene is prepared by the condensation of two moles of phenylacetaldehyde in the presence of a strong acid such as fluorosulfuric acid. The compound is a useful intermediate in the synthesis of pharmaceuticals, for example, antispasmodic and antiinflammatory agents.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: May 27, 1980
    Assignee: The University of Illinois Foundation
    Inventor: Jacques Kagan
  • Patent number: 4156916
    Abstract: We describe a method and apparatus for handling information coded in the form of groups of pulses in sequential time slots forming blocks, each block having the same number of time slots. In this pulse transmission system an analog signal is converted to the above pulse code for transmission, and reconverted to analog form by an integration process. The process and apparatus are also adapted to arithmetic operations. An averaging device, employed in both transmission and arithmetic systems, includes a shift register provided with means for producing a current corresponding to the number of stages of the shift register in a given state.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: May 29, 1979
    Assignee: The University of Illinois Foundation
    Inventor: Wolfgang J. Poppelbaum
  • Patent number: 4133874
    Abstract: Synthetic erythrocytes. Hemoglobin is encapsulated in lipid materials to form cells which are typically 0.1 to 10 microns in their greatest dimension. Preferably cholesterol and one or more phospholipids are included in the cell membrane. The lipid membrane is of such character and thinness that O.sub.2 --CO.sub.2 transfer thereacross is readily accomplished. The preferred encapsulation process utilizes ultrasonic energy.
    Type: Grant
    Filed: February 10, 1978
    Date of Patent: January 9, 1979
    Assignee: The University of Illinois Foundation
    Inventors: Irving F. Miller, Ljubomir Djordjevich
  • Patent number: 4098690
    Abstract: A process for treating wastewaters to reduce the ammonia content thereof comprising the steps of:A. contacting wastewater, having a dissolved ammonia content, with an ion exchanger having an affinity for ammonium ions whereby ammonium ions become sorbed onto said ion exchanger;B. separating said ion exchanger containing sorbed ammonium ions from the wastewater and then regenerating said ion exchanger and converting the ammonium ions thereon to nitrate ions by treating the ion exchanger with a concentrated salt solution and a culture of nitrifying bacteria whereby ions from the salt solution become absorbed onto the ion exchanger while ammonium ions on the ion exchanger are displaced into solution and oxidized by the nitrifying bacteria to nitrate ions; and,C. recycling the regenerated ion exchanger for further contact with wastewater.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: July 4, 1978
    Assignee: The University of Illinois Foundation
    Inventor: Michael J. Semmens