Patents and Patent Applications from Iowa State University


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5368657 Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions  
A metallic melt is atomized using a high pressure atomizing gas wherein the temperature of the melt and the composition of the atomizing gas are selected such that the gas and melt react in the...
5367308 Thin film resonating device  
A thin film resonator (TFR) antenna is disclosed which is characterized by substantially lower effective dielectric constant for the layer of dielectric material deposited between the ground metal...
5367084 Preparation of pyrrol and oxazole compounds: formation of porphyrins and c-acyl-α-amino acid esters therefrom  
A process for preparation of new or previously known pyrrol derivatives is provided. The process involves reacting a nitroalkane or a nitroalkene with an isocyanoacetate in the presence of a...
5366688 Heat sink and method of fabricating  
A heat sink composed of metal particles dispersed in a binder or a sintered structure in which the binder is removed; and the method of forming a heat sink by molding the heat sink from a...
5361077 Acoustically coupled antenna utilizing an overmoded configuration  
An antenna utilizing an overmoded configuration for coupling energy in a predetermined frequency band between an electrical circuit and a propagating medium. The antenna includes a first thin film...
5360613 Method of reducing blood levels of total cholesterol and low-density lipoprotein cholesterol  
Patients with elevated blood levels of low-density lipoprotein (LDL) and total cholesterol are treated by administering β-hydroxy-β-methylbutyric acid (HMB) to reduce the patient's blood level of L...
5356655 Starch-thickened acidic foodstuffs and method of preparation  
Starch-thickened acidic foodstuffs are provided in which the starch used as a thickener comprises sugary-2 starch obtaining from sugary-2 genotype maize seeds. Sugary-2 starch can be effectively...
5352906 Poly (p-phenyleneneacetylene) light-emitting diodes  
Acetylene containing poly(p-phenyleneacetylene) (PPA) - based light-emitting diodes (LEDs) are provided. The LEDs are fabricated by coating a hole-injecting electrode, preferably an indium tin...
5352771 Hydrolysis of peptide bonds using Pt (II) and Pd (II) complexes  
The present invention provides a method for the selective cleavage of peptide amide bonds under ambient conditions by treating a peptide comprising the subunit --CO--NH--CH((CH2)x SY)CONH-- wherein...
5348979 Method of promoting nitrogen retention in humans  
Nitrogen retention in human subjects is promoted by administering β-hydroxy-β-methylbutyric acid (HMB). The amount of HMB administered is effective to conserve protein as determined by reduction i...
5348617 Selective etching process  
A process for selectively etching silicon comprises preparing a solution of etchant which is a non-selective etch for at least silicon and aluminum. The prepared solution is preconditioned by...
5344948 Single-source molecular organic chemical vapor deposition agents and use  
Neutral single-source molecular organic precursors containing tetradentate tripodal chelating ligands are provided that are useful for the preparation of films using chemical vapor deposition....
5335240 Periodic dielectric structure for production of photonic band gap and devices incorporating the same  
A periodic dielectric structure which is capable of producing a photonic band gap and which is capable of practical construction. The periodic structure is formed of a plurality of layers, each...
5334539 Fabrication of poly(p-phenyleneacetylene) light-emitting diodes  
Acetylene containing poly(p-phenyleneacetylene) (PPA) - based light-emitting diodes (LEDs) are provided. The LEDs are fabricated by coating a hole-injecting electrode, preferably an indium tin...
5332572 Method for protection of swine against pleuropneumonia  
The respiratory mucosa of swine are sensitized for the production of protective IgA antibodies on infection with Actinobacillus (Haemophilus) pleuropneumoniae by prior administration of a vaccine...
5330969 Method for producing strain tolerant multifilamentary oxide superconducting wire  
A strain tolerant multifilamentary wire capable of carrying superconducting currents is provided comprising a plurality of discontinuous filaments formed from a high temperature superconducting...
5327496 Communication device, apparatus, and method utilizing pseudonoise signal for acoustical echo cancellation  
A communication device, an apparatus, and a method for acoustic echo cancellation which makes use of a pseudonoise signal. An audio mixer adds the pseudonoise signal to an input signal received...
5324401 Multiplexed fluorescence detector system for capillary electrophoresis  
A fluorescence detection system for capillary electrophoresis is provided wherein the detection system can simultaneously excite fluorescence and substantially simultaneously monitor separations in...
5322034 Livestock record system  
An electronic livestock record system stores the individual animal's identification and performance data on a programmable electronic identification and data storage module carried with the animal...
5320669 Cereal grain-based biodegradable thermoplastic compositions  
The present invention provides a biodegradable thermoplastic composition made of a cereal grain that is treated with an organic solvent, and optionally a cross-linking agent such as an aldehyde, an...
5313405 System and method for non-destructive evaluation of surface characteristics of a magnetic material  
A system and a related method for non-destructive evaluation of the surface characteristics of a magnetic material. The sample is excited by an alternating magnetic field. The field frequency,...
5313067 Ion processing apparatus including plasma ion source and mass spectrometer for ion deposition, ion implantation, or isotope separation  
An ion processing apparatus for processing a target with ions includes a plasma ion source and a mass spectrometer for producing an ion beam for depositing ions onto the surface of the target to...
5312649 Diorganosilacetylene-alt-diorganosilvinylene polymers and a process densifying porous silicon-carbide bodies  
The present invention provides linear organosilicon polymers including acetylene and vinylene moieties, and a process for their preparation. These diorganosilacetylene-alt-diorganosilvinylene...
5309374 Acoustic and video imaging system for quality determination of agricultural products  
A flexible system for determining the quality of agricultural products based on characteristics such as, for example, mass, shape, hardness, size, color and surface texture is disclosed herein. The...
RE34594 Preemergence weed control using corn gluten meal  
Corn gluten meal is used as a natural preemergence herbicide.
5307146 Dual-wavelength photometer and fiber optic sensor probe  
A dual wavelength optical sensor for measuring chemical properties of a particular quantity, the optical sensor including a sensor probe having a thin sensing film whose optical characteristics are...
5300869 Nonholonomic camera space manipulation  
A nonholonomic camera space manipulation system which allows a mobile manipulator which can have both holonomic and nonholonomic movement to autonomously use computer vision to move with respect to...
5292639 Association of bovine mitochondrial DNA with traits of economic importance  
A method of genetically evaluating animals by using mitochondrial DNA is disclosed. Polymorphisms in mitochondrial DNA are detected by isolating, fragmenting, and sequencing the DNA. The...
5290757 Preemergence weed control using dipeptides from corn gluten hydrolysate  
A composition useful as a selective preemergence herbicide is provided, comprising an effective amount of a dipeptide selected from the group consisting of Gln-Gln, Ala-Asn, Ala-Gln, Gly-Ala,...
5290749 Preemergence weed control using plant portein hydrolysate  
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...
5285750 Laser cutting of eggshells  
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...
5280291 Thermodynamics-based signal receiver  
The thermodynamics-based signal receiver transforms contiguous segments of a received signal into thermodynamics-related quantities using an analog of a statistical-mechanics-related quantities...
5279123 Apparatus for recovery and use of waste thermal energy  
Energy recovery apparatus for recovering and using thermal energy comprises multiple series of shape memory elements having decreasing transformation temperatures from one element to the next in...
5277705 Powder collection apparatus/method  
Device for separating and collecting ultrafine atomized powder from the gas stream of a gas atomizing apparatus comprises a housing having an interior wall oriented at an angle relative to...
5272086 Artificial zona pellucida for in vivo culture of nude blastomeres  
An artificial zona pellucida is provided for implantation in the peritoneal cavities of small laboratory animals. The assembly includes a hydrogel cartridge for containing one or more nude isolated...
5269189 Method and means of transmitting and receiving broad-band unipolar, ultrasonic pulses for ultrasonic inspection  
The invention includes a means and method for transmitting and receiving broadband, unipolar, ultrasonic pulses for ultrasonic inspection. The method comprises generating a generally unipolar...
5264599 Process for reducing cholesterol in animal fats  
A process is provided for treating an edible animal fat to reduce the content of components having free hydroxyl groups. The process comprises forming a reaction mixture from the fat and a cyclic...
5260436 Method for synthesis of triarylisocyanurates from aryl isocyanates using triazaprophosphatrane catalysts  
A method is provided to prepare triaryl isocyanurates from aryl isocyanates by using triazaprophosphatrane catalysts.
5256991 Broadband microwave active inductor circuit  
A broadband microwave active inductor circuit for producing a flat inductive response versus frequency comprises a pair of bipolar transistors arranged in a gyrator configuration for producing an...
5254289 Nonlinear optical and conductive polymeric material  
A polymeric material which exhibits nonlinear optical properties if undoped and conductive properties if doped. The polymer is prepared by polymerizing diethynylsilane compositions, the resulting...
5252147 Modification of surface properties of copper-refractory metal alloys  
The surface properties of copper-refractory metal (CU-RF) alloy bodies are modified by heat treatments which cause the refractory metal to form a coating on the exterior surfaces of the alloy body....
5251486 Method of ultrasonic measurement of texture  
A method for measuring texture of metal plates or sheets using non-destructive ultrasonic investigation includes measuring the velocity of ultrasonic energy waves in lower order plate modes in one...
5247302 Entropy-based signal receiver  
The entropy-based signal receiver uses the entropy of a received signal or a quantity that is closely related to entropy as the means to measure changes in the signal as a function of time or...
5245638 Method and system for benchmarking computers  
A testing system and method for benchmarking computer systems. The system includes a store containing a scalable set of tasks to be performed to produce a solution in ever-increasing degrees of...
5243060 Silylene-diethynyl-arylene polymers having liquid crystalline properties  
The present invention provides linear organosilicon polymers including diethynyl-(substituted)arylene units, and a process for their preparation. These novel polymers possess useful properties...
5242508 Method of making permanent magnets  
A method for making an isotropic permanent magnet comprises atomizing a melt of a rare earth-transition metal alloy (e.g., an Nd--Fe--B alloy enriched in Nd and B) under conditions to produce...
5241029 Diorganosilacetylene-alt-diorganosilvinylene polymers and a process of preparation  
The present invention provides linear organosilicon polymers including acetylene and vinylene moieties, and a process for their preparation. These diorganosilacetylenealt-diorganosilvinylene linear...
5240513 Method of making bonded or sintered permanent magnets  
An isotropic permanent magnet is made by mixing a thermally responsive, low viscosity binder and atomized rare earth-transition metal (e.g., iron) alloy powder having a carbon-bearing (e.g.,...
5236708 Reduced-protein subunit vaccine for swine dysentery  
The effectiveness of parenteral vaccination of swine with Treponema hyodysenteriae preparations is increased by reducing the protein content of the Treponema hyodysenteriae cells and subcellular...
5236691 Ternary metal-rich sulfide with a layered structure  
A ternary Nb-Ta-S compound is provided having the atomic formula, Nb1.72 Ta3.28 S2, and exhibiting a layered structure in the sequence S-M3-M2-M1-M2-M3-S wherein S represents sulfur layers and M1,...