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| Number | Title | Issue Date |
| 4186321 | Current collector with compliant brush containing liquid metal reservoir A current collector for an electrical machine employs a rotor collector ring encircled by a stator collector ring to which a compliant brush of U-shaped cross section and fabricated of an electrically conductive, liquid metal-permeable material is attache... | 01/29/1980 |
| 4184897 | Droplet migration doping using carrier droplets Carrier droplets are employed in moving melts of metal-rich semiconductor material through a solid body of semiconductor material by thermal gradient zone melting. One element of the droplet is selected for its ability to penetrate and migrate through the... | 01/22/1980 |
| 4184984 | High breakdown voltage varistor A metal oxide varistor with high breakdown electric field values, in excess of 1200 v.mm-1, is processed by sintering a mixture which comprises zinc oxide with significant amounts of bismuth oxide, from approximately 10 mol percent to approxima... | 01/22/1980 |
| 4185318 | Charge storage memory with isolation nodal for each bit line A conductor-insulator-semiconductor (CIS) structure for a random access surface charge memory system is disclosed. The memory system comprises an array of memory cells including charge storage regions, charge transfer regions and charge receive-source reg... | 01/22/1980 |
| 4185272 | Distribution control system A redundant digital address and function code is generated at a central location and transmitted through a signal circuit or an A.C. power distribution circuit to a plurality of receiver locations. At each addressed receiver location, the encoded function... | 01/22/1980 |
| 4184885 | Alumina core having a high degree of porosity and crushability characteristics A fired alumina article having a core of material having from 20 to 65 percent continuous porosity by volume and desired crushability characteristics and an integral outer barrier layer consisting of porous alumina having a density gradient.... | 01/22/1980 |
| 4183988 | Solid ion-conductive electrolyte A solid ion-conductive electrolyte is described which comprises a polymer film, a plurality of solid polycrystalline ion-conductive particles embedded therein, and the particles exposed at both opposite surfaces of the film.... | 01/15/1980 |
| 4182010 | Electron beam matrix deflector manufactured by etching divergent slots A matrix deflector, for deflecting an electron beam passing therethrough, is fabricated of a pair of members of photosensitive insulating material which are each exposed to a pattern of photons, and then developed to form a pattern of substantially parall... | 01/08/1980 |
| 4182173 | Duplex ultrasonic imaging system with repetitive excitation of common transducer in doppler modality A duplex imaging system with a common transducer array for both modes of operation satisfies the conflicting bandwidth requirements by single impulse excitation of the transducer in B-scan imaging operation to generate a wide bandwidth ultrasound pulse an... | 01/08/1980 |
| 4181505 | Method for the work-hardening of diamonds and product thereof Extensive development of deformation bands in diamond crystals results from subjecting diamond material properly confined to reduce or eliminate brittle fracture thereof to the simultaneous application of high pressure and temperature in a defined region ... | 01/01/1980 |
| 4181501 | Method and apparatus for measuring antibody levels A diagnostic device is described employing a solid, rigid diagnostic substrate (having as a part thereof an exposed layer of first immunologically reactive biological particles) in combination with means spaced therefrom for containing a solution of secon... | 01/01/1980 |
| 4181899 | High power optical second harmonic generation in non-linear crystals Harmonic generation in a nonlinear crystal, arising out of high power optical energy produced by a neodymium-doped glass laser operating at 1.06 micrometers wavelength, is normally limited by crystal self-heating due to thermal-optical effects that cause ... | 01/01/1980 |
| 4181641 | Polyetheramide-acid-imide solution and process for preparation thereof Disclosed is a solution consisting essentially of a liquid ether solvent and dissolved therein a polyetheramide-acid-imide prepared by reacting at least one aromatic bis(ether anhydride) with at least one organic diamine. Also disclosed is a process for p... | 01/01/1980 |
| 4180807 | Charge transfer circuit with voltage threshold compensating means A charge transfer circuit of the type including first and second capacitors separated by a charge transfer MOSFET is disclosed. The disclosure includes the description of a circuit which compensates for variations in the threshold voltage of the charge tr... | 12/25/1979 |
| 4180792 | Transmit-receive transducer array and ultrasonic imaging system A linear transducer array with low overall side lobe sensitivity for use in steered beam imagers has a different interelement spacing for transmit than for receive, and preferably has a shorter transmit array with elements spaced at one-half wavelength as... | 12/25/1979 |
| 4180791 | Simplified sector scan ultrasonic imaging system A curved transducer array or a flat array with an acoustic converging lens functions as a fixed focus physical lens and is focused near maximum range. At longer ranges the full aperture is utilized for good resolution, and at shorter ranges up to a specif... | 12/25/1979 |
| 4180790 | Dynamic array aperture and focus control for ultrasonic imaging systems A B-scan ultrasonic imager such as a single-sector scanner has a dynamic aperture and focus control to attain improved lateral resolution especially at ranges less than the maximum array aperture. As the range from which echoes are being received propagat... | 12/25/1979 |
| 4180763 | High intensity discharge lamp geometries Novel geometries for high intensity discharge solenoidal electric field lamps are disclosed providing good coupling between the magnetic fields within the ferrite and the plasma discharge. In addition, the geometries provide for good heat sinking and cool... | 12/25/1979 |
| 4180737 | X-ray detector A solid state x-ray detector has a scintillator element converting x-ray flux to fluorescence photons, a photosensor detecting the x-ray induced fluorescence of the scintillator, and collimator plates of a high atomic number material and having thickened ... | 12/25/1979 |
| 4179898 | Vapor compression cycle device with multi-component working fluid mixture and method of modulating its capacity A vapor compression cycle device is described which includes a multi-component working fluid mixture, condensing heat exchanger and an associated vapor-liquid separator connected to the compressor, a high-pressure liquid accumulator connected to the conde... | 12/25/1979 |
| 4179395 | Dichroic dyes having a plurality of azo bonding groups Dichroic liquid crystal compositions for use in displays are mixtures of a liquid crystal host material and at least one of a plurality of dyes each having a plurality of azo (--N.dbd.N--) bonding groups and a high order parameter. The dichroic liquid cry... | 12/18/1979 |
| 4179548 | UV curable resin compositions containing urethanes of hydroxybenzotriazoles or urethanes of hydroxy benzophenones Urethanes of hydroxybenzotriazoles and hydroxybenzophenones which can be chemically modified upon heating have been found useful in imparting weather resistance to plastic substrates when applied as part of a UV curable resin which can be subsequently hea... | 12/18/1979 |
| 4178187 | Mixed oxide compound NdAlO3 for casting advanced superalloy materials Mixed oxide compounds La2 O3.11Al.sub.2 O3, NdAlO3 and nonstoichiometric MgAl2 O3 are suitable for making cores and molds for casting advanced superalloy materials such as NiTaC-13.... | 12/11/1979 |
| 4178192 | Promotion of surface film stability during initiation of thermal migration Titanium, aluminum, lithium, magnesium and calcium are metal wetting agents which are capable of reducing the oxide of a semiconductor material naturally occurring, deposited or grown on a body of the semiconductor material and increasing the solubility o... | 12/11/1979 |
| 4178405 | Magnetic belt with conductive coating A magnetic belt for magnetic printing and the like has a relatively low surface resistivity provided by a conductive surface layer to eliminate unacceptable toner background.... | 12/11/1979 |
| 4178519 | Input circuit for charge transfer apparatus Input structures are described for sampling an analog signal and providing charge samples in accordance therewith to charge transfer devices.... | 12/11/1979 |
| 4178522 | Infrared detection apparatus In infrared detection and imaging systems circuits are provided for removing the high background thermal component of signal.... | 12/11/1979 |
| 4177856 | Critical gas boundary layer Reynolds number for enhanced processing of wide glassy alloy ribbons A critical gas boundary layer Reynolds number has been defined to indicate processing conditions under which wide glassy alloy ribbons result when processing under various gaseous atmospheres and pressures and casting onto a moving substrate at an impinge... | 12/11/1979 |
| 4178022 | Welded austenitic steel pipe assembly Tapered stainless steel spool pieces are welded to the ends of stainless steel pipe lengths at the factory to provide subassemblies which are then annealed and thereafter in the field are positioned with the larger free ends of opposed spool pieces dispos... | 12/11/1979 |
| 4177091 | Method of producing silicon-iron sheet material, and product The magnetic properties of silicon-iron containing tin and very low sulfur are improved without impairing weldability by adding from 0.002 to 0.010 percent selenium to the melt.... | 12/04/1979 |
| 4177011 | Bar for sealing the gap between adjacent shroud plates in liquid-cooled gas turbine A sealing bar is provided for each gap between adjacent shroud plates to form part of the coolant recovery system of an open-circuit, liquid-cooled gas turbine. The undersides of the edges of the shroud plates at each gap are chamfered and a small cylindr... | 12/04/1979 |
| 4176112 | Moisture curable alkoxy organopolysiloxanes Alkoxy substituted 1,3-dicarbonyl silyl ethers have been found to produce moisture curable organopolysiloxane compositions having optimum cure characteristics when such silyl ethers are utilized with silanol containing organopolysiloxanes. The moisture cu... | 11/27/1979 |
| 4176311 | Positive ion smoke detector using a tungsten wire preheated in hydrogen to increase sensitivity Smoke is detected by a surface ionization effect on a heated wire filament disposed opposite a negative ion collector electrode. Current flow between the wire and the electrode increases in the presence of smoke. The increase is probably attributable to s... | 11/27/1979 |
| 4176111 | Moisture curable organopolysiloxanes Organopolysiloxanes are provided having terminal 1,3-dicarbonyl cyclic organo siloxy units curable to the solid elastomeric state upon exposure to moisture under ambient conditions. The moisture curable organopolysiloxanes are useful as encapsulants, caul... | 11/27/1979 |
| 4176296 | Core mounting for solenoidal electric field lamps A mounting assembly for a ferrite core disposed within a solenoidal electric field lamp comprises first and second members disposed in chord-like fashion, each having an opening for receiving the core, and in one embodiment, a third member which encircles... | 11/27/1979 |
| 4175973 | Curable compositions Cationic polymerization of epoxy resin such as epoxy monomers or prepolymers, can be achieved by use of certain radiation sensitive aromatic onium salts of Group Va elements. Curable compositions are provided which can be used as sealants, coating compoun... | 11/27/1979 |
| 4175972 | Curable epoxy compositions containing aromatic onium salts and hydroxy compounds Cationic polymerization of epoxy resin materials, such as epoxy monomers or prepolymers, can be achieved by use of certain radiation sensitive aromatic onium salts of Group VIa elements. Curable compositions are provided which can be used as sealants, coa... | 11/27/1979 |
| 4175963 | Method of exposing and curing an epoxy composition containing an aromatic onium salt Cationic polymerization of epoxy resin such as epoxy monomers or prepolymers, can be achieved by use of certain radiation sensitive aromatic onium salts of Group Va elements. Curable compositions are provided which can be used as sealants, coating compoun... | 11/27/1979 |
| 4174235 | Product and method of producing silicon-iron sheet material employing antimony The presence of antimony improves the magnetic properties of silicon-iron. Weld brittleness is reduced in addition to improving the magnetic properties by both adding antimony and lowering the sulfur content.... | 11/13/1979 |
| 4174374 | Maintaining the separation efficiency of immobilized liquid membranes in gas separation methods and apparatus Disclosed are an improved method and apparatus employing at least one immobilized liquid membrane separated from a liquid sweep by a gas-permeable barrier for removing a gaseous component from a gaseous mixture. The improvements include use of one or more... | 11/13/1979 |
