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| Number | Title | Issue Date |
| 4821093 | Dual channel high electron mobility field effect transistor A multi-terminal Group III-V semiconductor high electron mobility field effect transistor comprised of a sandwich of molecular beam epitaxially grown layers and including two high mobility charge flow channels in respective two dimensional electron gas re... | 04/11/1989 |
| 4813124 | Bakeable evacuative container assembly for hot isostatic pressing A bakeable evacuative fabrication assembly for the production of permanent agnets formed by assembling discrete magnetic elements on a core, enclosing such assembly in a close-fitting container, providing end closures on said container, and providing a one... | 03/21/1989 |
| 4811023 | Antenna performance evaluation method and apparatus Phased array antennas are rapidly tested for performance degradation utilng a beam steering computer unit and built-in test equipment. The antenna includes a plurality of bays in a planar matrix, each bay having subarray modules containing pairs of dipol... | 03/07/1989 |
| 4764743 | Permanent magnet structures for the production of transverse helical fields Permanent magnet structures in several alternative forms are fabricated f multiplicities of permanent magnet segments of magnetic materials, preferably rare earth compounds, with the segments displaced radially from each other progressively along the str... | 08/16/1988 |
| 4658228 | Confinement of longitudinal, axially symmetric, magnetic fields to annular regions with permanent magnets A magnetic device of permanent magnet materials for the control of linearly xtending annular cross-sectioned magnetic fields formed of two concentrically nesting magnetic tubular elements defining an annular space therebetween, and inner and outer cladding... | 04/14/1987 |
| 4658406 | Digital frequency divider or synthesizer and applications thereof The digital frequency divider (or synthesizer) produces non-integral submultiples of an input frequency by alternately dividing its input by two integers by means of two integral digital frequency dividers, one of which produces an output higher than the ... | 04/14/1987 |
| 4654618 | Confinement of kOe magnetic fields to very small areas in miniature devices A rare earth permanent magnetic apparatus for the containment and control thout any substantial loss of field flux comprising electro-deposited layers of rare earth magnetic material disposed and laid up around a ferrite center core element, the first or ... | 03/31/1987 |
| 4654118 | Selectively etching microstructures in a glow discharge plasma Selective etching of microelectronic devices comprising crystal substrates s achieved by electrically masking conductive areas thereon which are not to be etched by ionic bombardment. The electrical masking is accomplished by biasing the selected areas wit... | 03/31/1987 |
| 4649393 | Phased array antennas with binary phase shifters Steerable phased array antennas of the tapered type in which the antenna ment power is maximum at the center of the array and tapers off on either side thereof. The phase shifters of each antenna element are of the binary digital type with the number of ... | 03/10/1987 |
| 4639695 | Wideband saw channellizer using slanted array input transducer Acoustic signal processing apparatus for the frequency-partition processing f a wideband RF spectrum surface acoustic wave (SAW) input signal into a multiplicity of relatively narrowband individual contiguous acoustic wave output signals, utilizing a wideb... | 01/27/1987 |
| 4636751 | Coaxial cavity Gunn oscillator using probe coupled microstrip A millimeter wave microstrip transmission line is coupled to a solid state echanically tunable cylindrical resonating coaxial cavity millimeter-wave oscillator by means of a probe extending linearly from the microstrip through an access slot in the cylindr... | 01/13/1987 |
| 4634929 | Broadband multipactor device A plurality of contiguous cavity pairs of multipactor input and output cavities respectively formed in two opposing ridge waveguide sections and which are mutually separated by an acceleration drift region of relatively high DC electric field strength. Bo... | 01/06/1987 |
| 4610948 | Electron beam peripheral patterning of integrated circuits Silicon wafers are imprinted with microelectronic circuit patterns by first ithographing the outlines or peripheries of all circuit features of a given wafer level by means of a narrow line formed by direct-writing electron beam lithography utilizing a pos... | 09/09/1986 |
| 4596051 | Optical interface to an electrical central office An electro-optical interface unit is shown for interfacing an all-optical telephone to a conventional electrical-metallic-type telephone communications system, having conventional electrical subscriber units, switching, and supervisory systems. An overall... | 06/17/1986 |
| 4596012 | Master controller succession system for bus control access for data-communications local area networks An apparatus and a method which permits a plurality of master stations to be attached to a communications channel and to provide an arbitrating mechanism within each master by which one master station is designated as in control of the communications chan... | 06/17/1986 |
| 4588966 | Image line voltage controlled oscillator with replaceable components A millimeter wavelength oscillator combining a mechanically tunable resonating cavity oscillator element with an electronically tunable solid state diode element provides a basic stable steady wave energy source with fine-tuning capabilities not possible ... | 05/13/1986 |
| 4588967 | Integrated varactor tuned coaxial gun oscillator for 60 GHz operation An electronic varactor tuner is integrally combined with a mechanically tuned Gunn oscillator to provide an increased tuning range in a light weight, compact, rugged combination with easily and quickly replaceable components.... | 05/13/1986 |
| 4581591 | Integrated circuit tunable cavity oscillator An integrated circuit tunable cavity oscillator for extremely high freque operation in image line waveguide. The oscillator includes a metal base with a cylindrical bore, a dielectric or semiconductor waveguide mounted atop the metal base and having a bo... | 04/08/1986 |
| 4573213 | Dual Gunn diode self-oscillating mixer A dual Gunn self-oscillating mixer is shown which can mix signals in the range substantially without introducing any noise and with high input signal power handling capacity and with higher output mixed signal power than conventional, owing to boosted p... | 02/25/1986 |
| 4554680 | Three diode balanced mixer A triple Gunn diode self-oscillating mixer system is shown which can mix nals in the VHF range substantially without introducing any noise and with high input signal power handling capacity and with higher output mixed signal power than conventional, owi... | 11/19/1985 |
| 4529987 | Broadband microstrip antennas with varactor diodes A microstrip antenna is disclosed consisting of a flat metallic patch spaced from the ground plane. To increase the bandwidth of the antenna a pair of varactor diodes are provided positioned at opposite sides of the patch and connected between it and the ... | 07/16/1985 |
| 4513448 | Low power radio synthesizer with harmonic identification feature A channelized radio has a phase-lock loop which locks to any one of a pluity of carrier frequencies. These frequencies are harmonics of a reference signal. A harmonic identification circuit is disclosed which produces harmonics of a reference signal whic... | 04/23/1985 |
| 4335559 | Dual pressure closure clipping system for chamber evacuator A dual pressure closure clipping system for use on chamber evacuators used in vacuum packing articles in flexible plastic bags provides high pressure for small bags and low pressure for large bags closure clipping actions, selectable according to evacuati... | 06/22/1982 |
| 4285681 | Tear resistant separable end-connected bags Continuous strip closed-bottom open-mouthed packaging bags are produced by continually making, at spaced intervals in a continuous flattened tubular oriented plastic film supply, a transversely extending heat seal to define a bag bottom, and, adjacent eac... | 08/25/1981 |
| 4277930 | Bags wicketed on a flexible binding A stack of flexible packaging bags, such as used in the meat packing industry in conjunction with automatic and semiautomatic packaging apparatus, made by assembling a multiplicity of flattened stacked wicket-holed bags on a flexible tubing binding thread... | 07/14/1981 |
| 4262803 | Bags wicketed on a flexible binding A stack of flexible packaging bags, such as used in the meat packing industry in conjunction with automatic and semiautomatic packaging apparatus, made by assembling a multiplicity of flattened stacked wicket-holed bags on a flexible tubing binding thread... | 04/21/1981 |
| 4257146 | Stuffed food casing break detector - shutoff A sizing control element on an automatic food casing stuffing apparatus is mounted to respond moveably to variations in casing internal stuffing pressure, and a pressure drop below a preselected pressure, such as will result from the occurrence of a casin... | 03/24/1981 |
| 4226003 | Large casings stuffing product stoppering means An emulsion flow shut off valve in apparatus for stuffing viscous food product into tubular flexible casings is interiorly recessed within the apparatus stuffing horn upstream of the stuffing horn discharge orifice a distance far enough to reestablish lam... | 10/07/1980 |
| 4210981 | Ectating ring shirring method and apparatus Sausage casing is shirred into pleated compressed sticks by an annular shirring ring-disc disposed with its axial centerline displaced from the casing axial centerline and also tilted with respect to the casing axial centerline so as to effect a continuou... | 07/08/1980 |
| 4164057 | Food casing stuffing sizing control method An improved sizing control technique utilizes a pressure ring bearing slidably on the outer periphery of a food casing being stuffed, the casing being provided with a convoluting element working conjunctively with a sizing disc inside the casing to provid... | 08/14/1979 |
| 4160305 | Apparatus and method for inserting a sizing disc into a tubular casing Apparatus and method for implanting a sizing disc into an open unshirred end of a shirred tubular casing wherein the sizing disc has a larger periphery than the unstretched inner periphery of the unshirred end of the casing.... | 07/10/1979 |
| 4140046 | Piercing blade temperature control A sheet piercing blade used to form perforate separation lines across continuous strip partible flattened tubular plastic film packaging bags is maintained a preselected optimum operating temperature by a heat transfer fluid medium circulating through a d... | 02/20/1979 |
| 4133076 | Large casings stuffing product stoppering means An emulsion flow shut off valve in apparatus for stuffing viscous food product into tubular flexible casings is interiorly recessed within the apparatus stuffing horn upstream of the stuffing horn discharge orifice a distance far enough to reestablish lam... | 01/09/1979 |
| 4085878 | Dispenser-cutter for tacky fabric materials An improved dispenser-cutter for rolled fabric materials, particularly tacky materials such as wax-impregnated fibrous paper, which comprises a cutting blade mounted on a slideable carriage reciprocally movable between cutting and retracted positions, the... | 04/25/1978 |
| 4081096 | Cantilevered belted bag loading method A multiplicity of relatively narrow spaced apart parallel arrayed endless conveyor belts cantilevered from a support frame in the direction of product movement at a bagging station moves individual product articles, one at a time, towards the cantilevered... | 03/28/1978 |
| 4077090 | Food casing stuffing sizing control apparatus A pressure ring bearing slideably on the outer periphery of a food casing being stuffed has a casing convoluting element working conjunctively with a sizing disc inside the casing to provide a wider than previously attainable range of holdback force on th... | 03/07/1978 |
| 4064776 | Apparatus for making tear resistant separable end-connected bags Continuous strip closed-bottom open-mouthed packaging bags are produced by continually making, at spaced intervals in a continuous flattened tubular oriented plastic film supply, a transversely extending heat seal to define a bag bottom, and, adjacent eac... | 12/27/1977 |
| 4023329 | Poultry packaging apparatus Poultry articles are advanced on an upwardly inclined conveyor one at a time through a wing and neck training jig mechanism which forms each such article into a packaging configuration, and, at the top of the upwardly inclined conveyor, tilted downwardly ... | 05/17/1977 |
| 4015917 | Apparatus for making reinforced wicket hole directionally tear prone A plastic film packaging bag is fabricated with directionally tear-prone wicket mounting holes having a hole edge reinforcing bead of plastic selectively thinner in the desired tearing direction formed by a hot gas stream directed through shaped templates... | 04/05/1977 |
| 3992107 | Automatic flat width control The width of a continuously moving flat material, such as a web, or a film sheet, or a flattened tubular plastic film, in manufacture or in process, is continuously monitored by non contacting sensor means which scan the material by oscillating transverse... | 11/16/1976 |
