Patents Assigned to Lehigh University
  • Patent number: 5138175
    Abstract: The present invention comprises a process for the removal of oxides of nitrogen and sulfur from a gas mixture containing those species by exposure of the gas mixture to ultraviolet radiation having a wavelength below 220 nanometers.
    Type: Grant
    Filed: January 11, 1991
    Date of Patent: August 11, 1992
    Assignee: Lehigh University
    Inventors: Yong W. Kim, William A. Frederick
  • Patent number: 5135848
    Abstract: Two diagnostic methods for evaluating LDL mechanism in a patient are disclosed. A novel diagnostic agent for evaluating LDL metabolism comprising a ligand capable of binding LDL receptors and a fluorescent label and a diagnostic kit for evaluating LDL metabolism which utilized the specified diagnostic agent are also disclosed.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: August 4, 1992
    Assignee: Lehigh University and Northeast Benjamin Franklin Technology Center of PA
    Inventors: John H. Abel, Barbara Obrepalska-Bielska
  • Patent number: 5106903
    Abstract: Monodisperse latexes of at least 2-30 microns particle size are prepared from an emulsion recipe comprising a monodisperse seed latex polymer on the order of 2 microns or less particle size, a polymerizable monomer, an initiator, at least one inhibitor, and a water-soluble polymeric emulsifier of 10.sup.4 -10.sup.7 molecular weight. Optional ingredients are crosslinking monomer, oil-soluble inhibitor if the mixture is to be stored before polymerization, and one or more additional emulsifiers selected from a water-soluble comonomer or polymer of 0.3.times.10.sup.3 -5.times.10.sup.3 molecular weight and a non-polymeric anionic emulsifier. Additional particle size growth and monodisperse latex yield are realized by polymerization in a microgravity environment.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: April 21, 1992
    Assignee: Lehigh University
    Inventors: John W. Vanderhoff, Fortunato J. Micale, Mohamed S. El-Aasser, Chi-Ming Tseng
  • Patent number: 5089126
    Abstract: This invention provides an apparatus and method for the complete fractionation of submicron particles according to size by capillary hydrodynamic fractionation. This objective is achieved by using small diameter capillaries; introducing a minor fraction of a liquid dispersion of particles to be separated into at least one capillary fraction; passing the minor fraction through the capillary; and, at the exit of the capillary, diluting the minor fraction with the same liquid as is carrying the fractionated sample. These modifications in the flow patterns are essential to the use of capillaries with diameters smaller than 60 microns. This invention is especially adapted for rapid analytical separation of not only rigid colloidal particles but also of soft latexes.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: February 18, 1992
    Assignee: Lehigh University
    Inventors: Cesar A. Silebi, Jose D. Ramos
  • Patent number: 5082964
    Abstract: A new group of alpha substituted cresol choline carbonate salts, that act as site-specific, irreversible inhibitors of acetylcholinesterase. A halomethylation method and a halogenation method for producing said alpha substituted cresol choline carbonate salts and analogs thereof. Methods of using the inhibitors as anticholinergic insecticides and to reduce acetylcholinesterase activity levels in organisms with excessive levels of acetylcholinesterase.
    Type: Grant
    Filed: June 10, 1986
    Date of Patent: January 21, 1992
    Assignee: Lehigh University
    Inventors: Ned D. Heindel, Miguel Turizo, Hugh D. Burns, Venkataraman Balasubramanian
  • Patent number: 5078886
    Abstract: An organic two-phase system useful for the separation and purification of chemicals, biochemicals and optical isomers. The two-phase system can be formed with water soluble polymers as one phase, and chiral compound as the other phase together with a water-miscible organic solvent and/or water.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: January 7, 1992
    Assignee: Lehigh University
    Inventor: James T. Hsu
  • Patent number: 5045775
    Abstract: A system for monitoring and measuring the corrosion reaction of metals in an environment. The system includes a sample corrosion element of substantially the same material as the structure to be monitored, a galvanic cell for generating an electric signal indicative of the corrosion on the corrosion element, and a monitor for receiving and storing the generated signal. Moreover, the system is designed to incorporate corrosion products and environmental contaminants in order to simulate actual, localized conditions on a particular area of a structure.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: September 3, 1991
    Assignee: Lehigh University
    Inventors: Malcolm L. White, Henry Leidheiser, Jr.
  • Patent number: 5043224
    Abstract: A process for enhanced thermal oxidation and nitridation of silicon by introduction of fluorine into the oxidation and nitridation ambients.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: August 27, 1991
    Assignee: Lehigh University
    Inventors: Ralph J. Jaccodine, Paul Schmidt, deceased, Eva Schmidt, executrix
  • Patent number: 5021233
    Abstract: The present invention concerns a process for carrying out the water gas shift reaction in the presence of carbon monoxide and water in contact with an alkali-doped catalyst.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: June 4, 1991
    Assignee: Lehigh University
    Inventors: Kamil Klier, Richard G. Herman, Gamimi A. Vedage
  • Patent number: 4997574
    Abstract: A method and system for biofouling control of fluid containing structure of susceptible biofouling, wherein chlorine, hot water and/or some other control agent is injected by plural stages into the boundary layer, and chlorine residual, water temperature, or some other respective control parameter is maintained in the boundary layer just upstream of the next injection point.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: March 5, 1991
    Assignee: Lehigh University
    Inventor: Nenad Sarunac
  • Patent number: 4995955
    Abstract: The present invention comprises a process for the removal of oxides of nitrogen and sulfur from a gas mixture containing those species by exposure of the gas mixture to ultraviolet radiation having a wavelength below 200 nanometers in absence of ammonia.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: February 26, 1991
    Assignee: Lehigh University
    Inventors: Yong W. Kim, William A. Frederick
  • Patent number: 4986658
    Abstract: A method and apparatus for in-process transient spectroscopic analysis of a molten metal, wherein a probe containing a pulsed high-power laser producing a pulsed laser beam having a substantially triangular pulse waveshape is immersed in the molten metal and irradiates a representative quantity of the molten metal. The pulsed laser beam vaporizes a portion of the molten metal to produce a plasma plume having an elemental composition representative of the elemental composition of the molten metal. Before the plasma plume reaches thermal equilibrium shortly after termination of the laser pulse, a spectroscopic detector in the probe detects spectral line reversals, as caused by absorption of radiation emitted by the hotter inner portion of the plasma plume to relatively coller outer portions of the plasma plume, during a short first time window.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: January 22, 1991
    Assignee: Lehigh University
    Inventor: Yong W. Kim
  • Patent number: 4980065
    Abstract: An aqueous two-phase system useful for the separation and purification of biochemicals and optical isomers. The two-phase system can be formed with water soluble polymers as one phase, and chiral compound as the other phase.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: December 25, 1990
    Assignee: Lehigh University
    Inventor: James T. Hsu
  • Patent number: 4943624
    Abstract: An amphiphilic polymer, having the monomer unit structure A, B, C or D: ##STR1## wherein R is at least one H and C.sub.1-6 alkyl, k=1-4, m=4-30, n=2-50 and x=2-500. ##STR2## wherein p and q are, independently, 0-22, and the sum of p and q is 4-22; ##STR3## wherein r and s are, independently, 0-22, and the sum of r and s is in the range 2-44, Ar is a divalent aromatic radical; and compounds in which the ester group in compounds A, B, C and D is replaced by an amide, urea, urethane, ether or carbonate. These compounds are useful for disrupting lipid membranes, as surfactants and dispersing agents and in the treatment of viral, bacterial and fungal diseases.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: July 24, 1990
    Assignee: Lehigh University
    Inventor: Steven L. Regen
  • Patent number: 4935217
    Abstract: Mordenite, a synthetic zeolite, is produced by reaction of particulate volcanic glasses with limited amounts of strongly basic aqueous solutions at elevated temperature and autogenic pressure for approximately one day.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: June 19, 1990
    Assignee: Lehigh University
    Inventor: Dale R. Simpson
  • Patent number: 4913746
    Abstract: A process for producing a galvanneal layer on a steel substrate, including forming a Zn-Fe coating having a predetermined Fe content F (wt. %) on the steel substrate; and heat treating the Zn-Fe coating on the substrate from a predetermined starting temperature T.sub.1 (.degree.C.) to a predetermined ending temperature T.sub.2 (.degree.C.) at a predetermined heating rate R (.degree.C./min.), wherein F, T.sub.1, T.sub.2, and R are selected so that the following condition is met,a.R.sup.2 +b.T.sup.2 +c.R.F.+d.R.T +e.R+f.T=gwhere a, b, c, d, e, f and g are predetermined constants, thereby to form a virtually 100% .delta..sub.1 phase galvanneal structure. Alternatively, the heat treatment can be preformed until the specimen temperature is just below a minimum temperature of the .delta..sub.1 phase stability range at at selected Fe content and heating rate, followed by an isothermal hold for a predetermined time period until transformation to the .delta..sub.1 phase occurs.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: April 3, 1990
    Assignee: Lehigh University
    Inventors: Arnold R. Marder, Mingyuan Gu
  • Patent number: 4890208
    Abstract: The disclosed stage lighting apparatus includes a constant-direction beam forming unit and an adjustable beam redirector for aiming the beam at a wide range of locations varying in azimuth and elevation, and programmable remote-control equipment for the various adjustments of the beam-forming unit and the beam redirector.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: December 26, 1989
    Assignee: Lehigh University
    Inventor: George C. Izenour
  • Patent number: 4843529
    Abstract: A stage lighting unit including a beam former and beam redirector. The beam redirector allows for the remote control of beam over a large expanse of the stage.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: June 27, 1989
    Assignee: Lehigh University
    Inventor: George C. Izenour
  • Patent number: 4843101
    Abstract: The present invention concerns an improved catalyst and method for the production of methanol from both binary and ternary synthesis gas mixtures.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: June 27, 1989
    Assignee: Lehigh University
    Inventors: Kamil Klier, Richard G. Herman, Gamimi Vedage
  • Patent number: 4808480
    Abstract: Compounds adapted to making polymerizable, cross linkable vesicles and methods for making these compounds comprising combining a phophatidylcholine derivative with an acid anhydride of a heterocyclic carbon/disulfide to form reaction products which when dispersed in aqueous buffer form vesicles that are readily polymerized by the addition of a reducing agent. The reduced vesicles form polymerized, highly cross-linked, vesicles which have a much greater stability and longer shelf life.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: February 28, 1989
    Assignee: Lehigh University
    Inventor: Steven L. Regen