| Patent Number |
Title Of Patent |
Date Issued |
| 4980039 |
Microwave-mediated degradation of PCB wastes |
December 25, 1990 |
| This is disclosed a process for the decomposition of halogenated hydrocarbons including polychlorinated biphenyls (PCB) and chlorinated pesticides, as DDT and DDE. The process comprises microwave-mediated wet-ashing of the halogenated hydrocarbons(s) in controlled conditions to avoid |
| 4946566 |
Photochemical production of hydrogen peroxide |
August 7, 1990 |
| The present invention relates to a photochemical process for the manufacture of hydrogen peroxidewherein a 9,10-phenanthraquinone compound is exposed, in the presence of an effective amount of a hydrogen donor alcohol, to electromagnetic radiation to photoreduce the 9,10-phenanthraquinon |
| 4941256 |
Automatic visual measurement of surface mount device placement |
July 17, 1990 |
| A method for inspecting the placement and alignment of surface mounted components on printed circuit boards during assembly. After the component is placed on the board, an infrared camera provides an image of leads on the component and corresponding soldering pads, to which the leads are |
| 4929553 |
Protease for specific processing of secreted proteins |
May 29, 1990 |
| This invention is concerned with the specific processing of secreted proteins in genetically modified yeast cells. The yeast KEX1 gene was cloned and the KEX1 product was shown to be a serine protease, evidently a carboxypeptidase B-like protease. A probable site of processing of pol |
| 4927635 |
Device for controlling stored food insects |
May 22, 1990 |
| This invention relates to a device for controlling certain common insect pests of stored food products in human residences, food storages and the like. It comprises, generally, a substrate, such as paper, cardboard or plastic and a deposit of silica aerogel particles releasably bonded to |
| 4902507 |
Toxic strains of the bacterium Bacillus thuringiensis for control of the bertha armyworm Mamestr |
February 20, 1990 |
| An insecticidal composition for controlling or inhibiting the growth of larvae of the Bertha armyworm, comprising an insecticidal substance of one or more strains of Bacillus thuringiensis and an insecticidally acceptable carrier. The strains belong to the varieties aizawai, kurstaki and |
| 4902344 |
Ferric chloride leach of a metal-sulphide bearing material |
February 20, 1990 |
| The present invention relates to an aqueous ferric chloride leach process for the extraction of metal values from a metal-sulphide bearing material, the leach being carried out in the presence of a leaching aid chosen from among salts of diesters of sulphodicarboxylic acids. It, in parti |
| 4900119 |
Wavelength selective optical devices using optical directional coupler |
February 13, 1990 |
| New types of narrowband wavelength selective optical devices are described. Various configurations are possible, according to the invention, that perform as narrowband wavelength selective transmission or reflection filters or as narrowband wavelength selective optical taps or combiners. |
| 4894806 |
Ultrasonic imaging system using bundle of acoustic waveguides |
January 16, 1990 |
| An ultrasonic imaging system for transmitting ultrasonic pulses into an object and detecting reflected ultrasonic waves therefrom. The system is provided with delay lines for real time imaging. The system comprises a probe means having a transmitting bundle of acoustic waveguides for |
| 4894537 |
High stability bimorph scanning tunneling microscope |
January 16, 1990 |
| A novel scanning tunneling microscope (STM) is described which is constructed almost entirely of one metal e.g. aluminum and uses bimorph piezoelectric disks as the x, y, z drive elements. The design uses a simple, rugged tirpod configuration for the fine motion drive arms. Coarse mo |
| 4880473 |
Process for the production of fermentable sugars from biomass |
November 14, 1989 |
| A process for the production of fermentable sugars from wood or other cellulose-containing biomasses, comprises the steps of (a) hydrolysing the biomass with a dilute sulfuric acid to dissolve hemicellulose while leaving most of cellulose in a solid phase, (b) separating the cellulos |
| 4870121 |
Electrical tree suppression in high-voltage polymeric insulation |
September 26, 1989 |
| Polymeric dielectrics which are exposed to highly divergent electric fields break down more quickly than expected because of the generation of ultra-violet radiation at defect points which degrades the polymer locally and leads to the formation of electrical trees in a polymeric insulati |
| 4867755 |
Preparation of composite fuels, with reduced sulfur emission characteristics, from oily and carb |
September 19, 1989 |
| A method of preparing a sulfur-containing composite fuel is provided to utilize some high-sulfur content solid and semi-solid fuels such as tar sand coke and refinery tank sludges by reducing their sulfur emission on combustion. The method comprises the steps of making an aqueous slurry |
| 4864638 |
FM receivers using three-terminal negative admittance networks or two and three-terminal negativ |
September 5, 1989 |
| Novel FM receivers are disclosed, which are very compact and simple yet possess high sensitivity. The receivers use novel three-terminal and two-terminal negative admittance networks. In one embodiment, one three-terminal negative admittance network forms a complete FM homodyne recei |
| 4859829 |
Adaptive welding control vision head |
August 22, 1989 |
| An adaptive welding control vision head with a metal enclosure for attachment to a welding head. The side of the enclosure facing the workpiece is angled away from the welding head, has two apertures and its external surface is coated with oil. Mounted inside the enclosure is a means |
| 4851484 |
Anhydride-based fortifiers for anhydride-cured epoxy resins |
July 25, 1989 |
| An anhydride-cured epoxy resin (epoxy resin+anhydride curing agent+catalyst) may be fortified (i.e. increased in strength and modulus without being made brittle) by the addition of a carboxylic acid and the reaction product of a carboxylic acid anhydride and a substituted aromatic am |
| 4837146 |
Forecasting the risk of sclerotinia stem rot in crops |
June 6, 1989 |
| Sclerotinia stem rot, caused by the fungus Sclerotinia sclerotiorum (L ib.) de Bary, is a major disease of rapeseed (canola) in western Canada and many other parts of the world. Significant yield losses result from severe crop infestatons. A method of stem rot disease forecasting is disc |
| 4833401 |
Electrical measuring instrument for high voltage power measurements |
May 23, 1989 |
| A current-comparator technique for obtaining an instrument for accurate high voltage power measurements at very low power factors is described. The quadrature component of the load current is automatically balanced in the current comparator against a quadrature current obtained from a sl |
| 4831126 |
Antigenic polysaccharide specific to Brucella abortus and Yersinia enterocolitica serotype 0:9 |
May 16, 1989 |
| The antigenic O-chain polysaccharides from Brucella abortus and Yersinia enterocolitica serotype 0:9 have similar structure, i.e. 1-2 linked 4,6-dideoxy-4-formamido-.alpha.-D-mannopyranosyl units. The antigen is more readily isolated from the Yersinia and may be chemically modified to |
| 4810954 |
Poynting vector probe for measuring electrical power |
March 7, 1989 |
| A new probe for measuring electric power flow from a source of supply to a load at high voltage and current, but at extremely low power factor is disclosed. The probe enables the direct measurement of electric power, in accordance with the Poynting theorem, by sensing the electric and ma |
| 4808208 |
Phenolic safeners for glyphosate herbicides |
February 28, 1989 |
| Glyphosate herbicides are used for weed control in crops. It has been found that the desired crop plants can be protected from the herbicidal effect by providing a pretreatment so that the crop plants have assimilated a phenolic compound found to give a safening effect. |
| 4800271 |
Galvanometric optical scanning system having synchronization photodetectors |
January 24, 1989 |
| A galvanometric optical scanning system is disclosed. In order to compensate errors in phase, zero drift etc., at least two synchronization photodetector means are provided in an optical path of scanning beam of light. The pulses produced by the photodetector means are processed to g |
| 4800270 |
Galvanometric optical scanning system having a pair of closely located synchronization |
January 24, 1989 |
| A galvanometric optical scanning system is disclosed. In order to compensate errors in phase, zero drift etc., beam position detection means is provided in an optical path of scanning beam of light and comprises a pair of closely located photodetectors. The pulses produced by the beam |
| 4721854 |
Quadrupole mass spectrometer |
January 26, 1988 |
| This disclosure presents an alternative, improved approach to the RF only quadrupole mass spectrometers. The ions whose masses place them near the stability limit for a given operating voltage and RF frequency, can be strongly influenced by the application of a very small dc voltage to t |
| 4701306 |
Concentrator for detection of amine vapors |
October 20, 1987 |
| A method, and air sampler concentrator, for sampling and detecting trace quantities of amine vapors in ambient atmospheres, are described. Atmospheres containing vapors of amines, particularly aralkyl amines such as amphetamines, are sampled and vapors collected in a concentrator having |
| 4700197 |
Adaptive array antenna |
October 13, 1987 |
| A small linearly polarized adaptive array antenna for communication systems is disclosed. The directivity and pointing of the antenna beam can be controlled electronically in both the azimuth and elevation planes. The antenna has low RF loss and operates over a relatively large commu |
| 4615579 |
Prism light guide luminaire |
October 7, 1986 |
| The luminaire for a prism light guide system consists of a longitudinal hollow structure made of transparent dielectric material. The structure has inner and outer surfaces which are in octature, and at least a portion of one outer surface that has a light release mechanism. The light re |
| 4541280 |
Efficient laser generation of surface acoustic waves |
September 17, 1985 |
| The surface acoustic waves are generated by laser beam that is focussed onto a surface to irradiate it in an arcuate pattern as a partial annulus or as a still or moving fringe pattern. The arcuate pattern may be formed by a transmitting or a reflecting axicon, while the fringe pattern m |
| 4414621 |
Interactive visual communications system |
November 8, 1983 |
| An interactive visual communications system consists of a number of similar terminals linked together by narrow band communications links. Each terminal consists of visual display apparatus having a display and a display generator, an input interactive device for providing input inst |
| 4406788 |
Particulate solids conveying and draining device |
September 27, 1983 |
| A particulate solids conveying and draining device, for mounting in a solids outlet wall, comprising a funnel-shaped rotor with particulate solids scooping members attached thereto. Each particulate solids scooping member comprises a paddle scooping portion leading to a liquid draining, |
| 4356170 |
Immunogenic polysaccharide-protein conjugates |
October 26, 1982 |
| Antigenic polysaccharides are modified to generate a terminally-located aldehyde group by controlled oxidation of vicinal hydroxyl groups, e.g. of unlinked terminal non-reducing sialic acid residues. In some cases where there is a reducing end group, e.g. of the type N-acetylmannosamine |
| 4346126 |
Method of casting a reverse osmosis or ultrafiltration polymeric membrane |
August 24, 1982 |
| An improvement in the method of casting a reverse osmosis or ultrafiltration polymeric membrane on a wall of porous support having a first, high pressure side under service conditions, and a second, low pressure side under service conditions, wherein the first side is coated wih a ce |
| 4344924 |
Solvent extraction of chromium and vanadium |
August 17, 1982 |
| Chromium and vanadium can be co-extracted from alkaline solutions or leach liquors containing these metals using quaternary amine solvent mixtures. The alkaline leach liquors usually are derived by leaching of calcined ores or concentrates. The loaded solvent mixture is scrubbed with chr |
| 4344316 |
Method and apparatus for indicating the air content of concrete in situ |
August 17, 1982 |
| The apparatus comprises a chamber having an open end and an opposite closeable end, and provided with a heating device and pressure measuring device. The open end of the chamber is inserted into the fresh concrete with opposite end opened. After insertion the chamber is closed and the |
| 4325207 |
Arch forming assembly |
April 20, 1982 |
| A collapsible arch forming assembly comprising a flexible member and two tension line lengths with one tension line length threaded through even number guides, counted from one end of the flexible member and the other tension line length threaded through the odd number guides. Tensioning |
| 4316157 |
Gas recirculation system for carbon dioxide lasers |
February 16, 1982 |
| A method and apparatus is described for reducing the gas consumption rate by controlling the gas composition in a repetitively pulsed high pressure and/or high energy density TE CO.sub.2 laser. Detrimental gas species formed in the discharge are removed by chemical reaction in the gas ph |
| 4291940 |
Low loss access coupler for multimode optical fiber distribution systems |
September 29, 1981 |
| The low loss access coupler includes two multimode optic fibers, each having a biconical taper section. The biconical taper sections of the fibers are fused together to provide optical coupling between the fibers. The fused fibers may also be twisted around one another to enhance mode |
| 4284622 |
Attractant for sunflower moth |
August 18, 1981 |
| An attractant has been found for the male sunflower moth Homoeosoma electellum (Hulst.). Z-9,E-12-tetradecadien-1-ol has been found effective, optionally in the presence of Z-9-tetradecen-1-ol. |
| 4284413 |
In-line method for the beneficiation of coal and the formation of a coal-in-oil combustible fuel |
August 18, 1981 |
| An in-line method for the beneficiation of coal and the formation of a coal-in-oil combustible fuel wherein the coal is wet pulverized, micro-agglomerated with light oil to dissociate a large amount of inorganic impurities and some water, agglomerated with heavy oil to form relativel |
| 4279625 |
Electrostatic system for concentrating, propelling and collecting airborne particulates for indu |
July 21, 1981 |
| A system of corona injection and repelling electrodes are positioned such that airborne particulates are charged in situ and are propelled to collecting grids above a furnace, or concentrated into particle streams directed into ventilation hoods to be collected by low volume, high ef |
| 4248020 |
Precast concrete stairway module |
February 3, 1981 |
| A precast concrete stairway module comprising a concrete wall assembly which is C-shaped in plan view, providing a side wall and two end walls, a concrete stair flight extending from an edge of one side wall to a mid-height position of the other side wall. The stair flight assembly is |
| 4236341 |
Animal trap |
December 2, 1980 |
| An animal trap comprising a first frame member made of strong metal rod, generally rectangular in shape and defining a striker bar and an anvil bar connected by side bars, said frame member also having extending bars fixedly connected to the frame at the junction points of the anvil bars |
| 4227520 |
Safety helmet for miners |
October 14, 1980 |
| A miner's safety helmet having a lamp mounted on the front thereof comprising inner and outer shells made of tough, hard plastic material having a generally hemispheric shape to conform with the upper part of the wearer's head, the shells being spaced apart, and closed around the rims |
| 4222421 |
Pressure bar for veneer cutting |
September 16, 1980 |
| A pressure bar of the fixed type for veneer cutting is heated to reduce frictional drag against the wood surface. In the preferred form, the pressure bar is contoured having a tip with a relatively small radius of curvature and a face, in advance of the tip, which has a relatively large |
| 4212535 |
Ultraviolet radiation dosimeter |
July 15, 1980 |
| A method for detecting, monitoring or measuring visible and ultraviolet radiation exposure wherein a liquid crystal element covered with a coating layer transparent to the radiation is placed in the path of the radiation to be monitored and then the shift of the spectral reflectance or |
| 4207453 |
Method of producing seam welded tube |
June 10, 1980 |
| A method of seam welding metal tube from a sheet metal blank wherein the sheet metal blank is provided with central key locating slots and pre-curled edges, then centrally located on a collapsible mandrel, having a heat sink liner extending therearound to a longitudinally extending gas |
| 4197142 |
Photochemical device for conversion of visible light to electricity |
April 8, 1980 |
| A photochemical device for conversion of visible light to electricity comprising one or more monolayers of dye material such as chlorophyll, an electron acceptor monolayer of saturated fatty acid between suitable electrode layers, all formed or mounted on a suitable substrate sheet. |
| 4193814 |
Binding lignocellulosic materials |
March 18, 1980 |
| A method of making a thermosetting binder for lignocellulosic materials, utilizing spent sulfite liquor, and a method of making a particleboard product. Spent sulfite liquor treated with sufficient sulfuric acid to provide a lignosulfonic acid content of not less than 0.8 milliequivalent |
| 3944866 |
Thermionic emitter of lanthanum strontium vanadates |
March 16, 1976 |
| A thermionic emitter for apparatus such as electron microscopes, scanning electron microscopes, and high power vacuum tubes which require a source of electrons formed from lanthanum strontium vanadate which is prepared from the compounds La.sub.(1.sub.-x) Sr.sub.(x) VO.sub.3, where x is |
