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The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 5307002 | Improvements in battery charging circuits A battery charging circuit comprising means to supply a DC output from the mains supply for inter alia recharging a rechargeable battery, switch means in series with the battery across the DC output which are normally closed but which open from time to ti... | 04/26/1994 |
| 5303546 | Oscillating piston engine for driving a ducted fan An internal combustion engine provides the motive power source to various types of aircraft using a ducted fan. The engine has a rotating annular cylinder which is rotated in a predetermined ratio to oscillation of a plurality of pairs of oscillating pist... | 04/19/1994 |
| 5287249 | Fin assembly for an integrated circuit A fin assembly includes a fin, a pair of mounting pieces for removably mounting the fin to an integrated circuit. The fin includes a bottom surface for contacting an upper surface of the integrated circuit and an upper surface from which a plurality of ri... | 02/15/1994 |
| 5279646 | Venturi scrubber and process A venturi scrubbing system optimized for removing the most optically active sized particles from a gaseous effluent stream is disclosed. Before entering the venturi the effluent stream is subcooled to cause condensation of water vapor and other condensibl... | 01/18/1994 |
| 5278912 | Multiband programmable compression system An improved audio compressor of the type which is useful in a hearing aid and having a programmable compression ratio is disclosed. In the preferred embodiment, the compressor is used in a hearing aid device of the type which comprises a bandsplit filter ... | 01/11/1994 |
| 5276910 | Energy recovering hearing system The present invention comprises a hearing system apparatus and method for electromagnetically communicating signals to a magnetic transducer. The apparatus includes a signalling circuit for producing a pulse-width modulated current signal. An antenna mean... | 01/04/1994 |
| 5274864 | Knock down litter board A composite litter board is made from two separate rigid board members that are adapted to be releasably secured to each other by two rigid partial sleeves with C-shaped cross sections that have narrow openings.... | 01/04/1994 |
| 5273832 | Gold-nickel-vanadium braze joint A ductile brazing material containing gold, nickel, vanadium and, optionally chromium or molybdenum is disclosed for directly bonding ceramic to ceramic or ceramic to metal over an optimum temperature range.... | 12/28/1993 |
| 5272530 | Method and apparatus for coding motion pictures utilizing motion compensation An improved motion picture coding scheme is described which provides the benefits of both sub-band coding and motion compensation thereby providing greater degrees of compression than would be obtained using either of these techniques separately. The syst... | 12/21/1993 |
| 5270972 | Three terminal serial-communicating peripheral device A three-terminal serial-communication peripheral device for low-cost applications is described. The peripheral device comprises a first terminal for receiving a modulated power signal including a source of power and a clocking signal, a second terminal fo... | 12/14/1993 |
| 5268217 | Abrasion wear resistant coated substrate product The coated substrate product finds particular application in eyeglass and sunglass lenses, architectural glass, analytical instrument windows, automotive windshields and laser bar code scanners for use in retail stores and supermarkets. The product has gr... | 12/07/1993 |
| 5266216 | Water purification apparatus and process utilizing ozone A system and a process is disclosed for purifying water with a domestic water holding tank and ozone-air mixture from an ozone generator. A mixer injector connected to a pump which provides the means for entraining the ozone-air stream gas into the water ... | 11/30/1993 |
| 5260432 | Human gamma retinoic acid receptor DNA A novel gamma retinoic acid receptor is disclosed. The novel receptor is encoded for by cDNA carried on plasmid pGEM-hRARγ, which has been deposited with the American Type Culture Collection for patent purposes. Chimeric receptor proteins are also disclo... | 11/09/1993 |
| 5259032 | contact transducer assembly for hearing devices A contact transducer assembly for an electromagnetically driven hearing device such as a hearing aid or other audio signal reproducing device worn by a user is described. The contact transducer assembly includes a transducer which is attached to a biocomp... | 11/02/1993 |
| 5252170 | Web splicing apparatus Apparatus for splicing the leading portion of web material from a fresh supply roll to the trailing portion of web material from an expiring supply roll to a take-up system comprising a pair of guiderollers normally positioned apart from each other, appar... | 10/12/1993 |
| 5249141 | Method and apparatus for maintaining an active device below a maximum safe operating temperature The present invention relates to the protection of a semiconductor active device from thermal breakdown without actually measuring the temperature of the semiconductor active device. Instead, the present invention measures the magnitude of the forward ele... | 09/28/1993 |
| 5243598 | Microcell system in digital cellular A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having a different assigned set of transmission frequency channels, are arranged with handoff control for maintaining continuous communication with mobile t... | 09/07/1993 |
| 5242534 | Platinum lift-off process A method for generating platinum features on the surface of a substrate is disclosed. The method provides an inexpensive means for constructing small platinum features. The method utilizes a photoresist mask to define the platinum features. The problems a... | 09/07/1993 |
| 5239819 | Sterol ice nucleation catalysts This invention provides for improved sterol nucleators of ice crystals. The improvement is the use of water stable crystalline forms of the sterols. These forms advantageously provide predictable nucleation temperatures which are stable for long periods o... | 08/31/1993 |
| 5239399 | Electrical-optical interface device Devices for converting digital data into a light pulse train and decoding such a pulse train are disclosed. The light pulse generating device generates a train of light pulses having a pattern determined by a numerical value represented by a plurality of ... | 08/24/1993 |
| 5232747 | Platinum-aluminum connection system An improved method for making aluminum connections to platinum electrodes is described. The method utilizes an oxide layer to isolate the aluminum from the platinum. The oxide layer is created by ashing the surface of the platinum using an Oxygen plasma.... | 08/03/1993 |
| 5227672 | Digital clock selection and changeover apparatus A clock changeover device comprising a first input port for accepting a first external clock signal, a second input port for accepting a second external clock signal, and an output port for outputting a selected one of the clock signals. The clock changeo... | 07/13/1993 |
| 5222463 | Oscillating piston engine An improvement in an internal combustion engine having a rotating annular cylinder which is rotated in a predetermined ratio to oscillation of a plurality of pairs of oscillating pistons in the cylinder, the pistons being so oscillated so that adjacent pi... | 06/29/1993 |
| 5220704 | Ergonomic tool support apparatus and material removal system This invention is a portable support apparatus comprising a mounting frame or yoke which can be supported about the hips of a worker or be attached to a machine or robot. A pivoting assembly pivots a rod having one end secured to the pivoting assembly to ... | 06/22/1993 |
| 5220680 | Frequency signal generator apparatus and method for simulating interference in mobile communication systems This invention is a multiple-frequency signal generator apparatus and method primarily for simulating a cell site interference environment for electromagnetic communications systems. The generator can produce a plurality of frequencies having a frequency-... | 06/15/1993 |
| 5219774 | Deposited tunneling oxide An apparatus and method for depositing a tunneling oxide layer between two conducting layers utilizing a low pressure, low temperature chemical vapor deposition (LPCVD) process is disclosed wherein tetraethylorthosilicate (TEOS) is preferably used. As app... | 06/15/1993 |
| 5220304 | Safety insulated transformers A safety insulated transformer where there are at least three layers of safety approved insulating material between any parts of the wires forming first and second windings. The first winding is wrapped torroidally with a strip of safety approved insulati... | 06/15/1993 |
| 5216853 | Telephone enclosure A telephone enclosure which provides wheelchair access while maintaining efficient usage of floor space is disclosed. The enclosure includes two telephone instruments. The enclosure may be constructed from mass-produced components while providing an appea... | 06/08/1993 |
| 5206800 | Zero voltage switching power converter with secondary side regulation A circuit for utilizing the magnetizing current in the transformer of a converter to reset the transformer's core and to provide a zero-voltage-switching condition on the converter's primary switch and to regulate the output voltage is disclosed. The powe... | 04/27/1993 |
| 5195595 | Fire extinguisher mounting apparatus A cabinet structure is described for enclosing a fire extinguisher or the like. The cabinet structure comprises a housing having a permanently hinged access panel which pivots away from the housing to permit access to its contents. The access panel is sec... | 03/23/1993 |
| 5195045 | Automatic impedance matching apparatus and method An automatic impedance matching apparatus for matching an RF-signal generator to a load, such as a plasma etching chamber, is disclosed. The matching apparatus comprises a matching network having two variable impedance devices, a tune detector for detecti... | 03/16/1993 |
| 5193109 | Zoned microcell with sector scanning for cellular telephone system A zoned microcell system with sector scanning for cellular telephone systems has a plurality of contiguous cells, each having a different assigned set of transmission frequency channels, arranged with handoff means for maintaining continuous communication... | 03/09/1993 |
| 5190807 | Abrasion wear resistant polymeric substrate product A substantially optically transparent coated substrate product with a highly adherent, abrasion-resistant diamond-like hard carbon coating is disclosed. The substrate product is comprised of a polymeric substrate, an adhesion-mediating polysiloxane polyme... | 03/02/1993 |
| 5186973 | HFCVD method for producing thick, adherent and coherent polycrystalline diamonds films A method for depositing a thick, adherent and coherent polycrystalline diamond (PCD) film onto a metallic substrate using a deposition rate of no greater than 0.4 μm per hour. The resulting PCD Film has a smooth surface finish, enhanced crystal orientati... | 02/16/1993 |
| 5181948 | Method and apparatus for forming micropipette of controlled configuration A micropipette puller of the type having a laser for heating a length of capillary to be pulled is shown. Before intercepting the capillary, the laser beam is first passed through an aperture to reduce the beam width to a desired size. In one embodiment t... | 01/26/1993 |
| 5177431 | Linear programming circuit for adjustable output voltage power converters An adjustable power converter which allows the output voltage of the power converter to be controlled linearly by a programming resistor or a programming voltage is provided. The adjustable power converter includes a linear programming circuit which gener... | 01/05/1993 |
| 5175525 | Low profile transformer The present invention provides a power transformer having a low profile and low overall volume. The power transformer also has improved isolation between the primary and the secondary windings, while at the same time providing improved electromagnetic cou... | 12/29/1992 |
| 5173846 | Zero voltage switching power converter A circuit for utilizing the magnetizing current in the transformer of a converter to reset the transformer's core and to provide a zero-voltage-switching condition on the converter's primary switch is disclosed. The power converter includes a transformer ... | 12/22/1992 |
| 5171671 | Retinoic acid receptor composition A novel retinoic acid receptor is disclosed. The novel receptor is encoded for by cDNA carried on plasmid phRAR1, which has been deposited with the American Type Culture Collection for patent purposes. Chimeric receptor proteins are also disclosed. The ch... | 12/15/1992 |
| 5160544 | Hot filament chemical vapor deposition reactor An improved hot filament chemical vapor deposition (HFCVD) reactor is disclosed comprising a gas dispersion system, a filament network and an apertured support plate for the substrate. The apertures in the support plate provide for counteracting the natur... | 11/03/1992 |
