Patents Represented by Attorney Birgit E. Morris

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  • Coated printed circuit wiring board and method of soldering
    Patent number: 4340167
    Abstract: Components can be held down on printed circuit boards by applying compositions comprising a water soluble polymeric compound or mixture of compounds which can be dissolved in water to give a greater than 45% solids content with a viscosity range of about 8 to about 12 poises at about 25.degree. C., a water soluble mono- or polyhydric alcohol, water, a wetting agent, and a water soluble organic acid having a keto oxygen group within 4 carbon atoms of the carboxylic acid group, to the printed circuit board prior to insertion of the components to keep them in place during soldering operations. The mixture can be completely removed after soldering by a water rinse.
    Type: Grant
    Filed: October 26, 1979
    Date of Patent: July 20, 1982
    Assignee: RCA Corporation
    Inventors: Marvin Packer, Otis D. Black
  • Method for interconnecting solar cells
    Patent number: 4340803
    Abstract: A method for interconnecting the body of a solar cell to an adjacent solar cell to form a solar cell array capable of withstanding high temperatures and rugged terrestrial applications, but minimizing the electrical degradation of the peak power output of the solar cells comprises the parallel gap welding of an interconnect metal layer perpendicular to the direction of force applied on the solar cell by the interconnect layer connecting adjacent solar cells wherein the width of the weld perpendicular to the direction of force is greater than the length of the weld.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: July 20, 1982
    Assignee: RCA Corporation
    Inventor: Peter J. Coyle
  • Stylus tip fabrication from a synthetic diamond stone
    Patent number: 4340954
    Abstract: A stylus tip is fabricated from a portion of a synthetic diamond stone having a plurality of facets oriented along the {100} family of planes. The portion is bounded by a right circular cylinder having a base thereof centered along one of the {100} facets having a surface area larger than the average surface area of the {100} facets, and having a base diameter and height equal to about half the width of the one facet.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: July 20, 1982
    Assignee: RCA Corporation
    Inventors: Shiu-Shin Chio, George A. Kim
  • Shank diamond cleaning
    Patent number: 4339281
    Abstract: The surface of a diamond bonded to a shank is cleaned by subjecting the shanked diamond to an ultrasonically agitated aqueous bath, contacting the shanked diamond with a concentrated aqueous alkaline solution, contacting the shanked diamond with an aqueous hydrogen peroxide solution, contacting the shanked diamond with a dilute aqueous citric acid solution, contacting the shanked diamond with an aqueous hydrofluoric acid-nitric acid solution, and rinsing the shanked diamond with water.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: July 13, 1982
    Assignee: RCA Corporation
    Inventor: Shiu-Shin Chio
  • Method of coating substrates with an abrasive layer
    Patent number: 4339471
    Abstract: A method for preparing an abrasive SiO.sub.x coating, wherein 1.ltoreq..times..ltoreq.2, on a substrate by glow discharge deposition wherein the deposition on the substrate in a vacuum chamber is interrupted before the desired final SiO.sub.x coating thickness is obtained. SiH.sub.4 and N.sub.2 O are subjected to a glow discharge and SiO.sub.x is deposited onto the substrate. The deposition is interrupted, SiH.sub.4 is removed from the vacuum chamber and the SiO.sub.x coating is exposed to oxygen. These steps are repeated until the desired final SiO.sub.x coating thickness is obtained.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: July 13, 1982
    Assignee: RCA Corporation
    Inventors: Grzegorz Kaganowicz, John W. Robinson
  • Method for fabricating adjacent conducting and insulating regions in a film by laser irradiation
    Patent number: 4339285
    Abstract: A method for fabricating adjacent electrically conducting and insulating regions in a silicon film is described. A substantially insulating layer of oxygenated, N or P doped, non-single crystalline silicon film is first formed. The film is then selectively laser irradiated so as to form an irradiated portion which is substantially conducting.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: July 13, 1982
    Assignee: RCA Corporation
    Inventor: Jacques I. Pankove
  • Fabricating amorphous silicon solar cells by varying the temperature _of the substrate during deposition of the amorphous silicon layer
    Patent number: 4339470
    Abstract: An improved process for fabricating amorphous silicon solar cells in which the temperature of the substrate is varied during the deposition of the amorphous silicon layer is described. Solar cells manufactured in accordance with this process are shown to have increased efficiencies and fill factors when compared to solar cells manufactured with a constant substrate temperature during deposition of the amorphous silicon layer.
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: July 13, 1982
    Assignee: RCA Corporation
    Inventor: David E. Carlson
  • Stone-positioning apparatus and method
    Patent number: 4335544
    Abstract: A technique for positioning a stone utilizes a pencil comprising a shaft having at one end a handle and at the opposite end supporting means adapted to hold a stone upon the application of a closing force thereto. The shaft has apparatus for adjusting the length thereof, and a housing fitted over the shaft between the ends thereof in a manner allowing the shaft to be frictionally rotated therein. The housing has apparatus for applying the closing force, disposed at one end thereof adjacent the supporting means, and is adapted to provide the closing force when the shaft is moved longitudinally along the housing.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: June 22, 1982
    Assignee: RCA Corporation
    Inventor: Ernest T. Manson
  • CMOS Device with silicided sources and drains and method
    Patent number: 4336550
    Abstract: A novel insulated gate field effect device is described wherein the device, having been formed from an island of semiconductive material on an insulative substrate, is characterized by the absence of discrete drain and source zones. The device further includes a gate structure and shallow metal silicided contact areas on the surface of the island adjacent the gate structure.
    Type: Grant
    Filed: March 20, 1980
    Date of Patent: June 22, 1982
    Assignee: RCA Corporation
    Inventor: Lawrence B. Medwin
  • Method of and apparatus for growing crystal ribbon
    Patent number: 4334948
    Abstract: A method and apparatus for growing crystal ribbon from a liquid melt by the EFG technique includes the use of a die having a capillary feed passage adjacent the ribbon pulling mechanism and gas scrubbing passages on each side of the capillary feed passage. Thus, gas entrapped in the liquid melt can diffuse through the gas scrubbing passages to minimize the presence of microvoids in the ribbon. In a particular embodiment, the capillary die can include lateral communicating passages between the capillary feed passage and the gas scrubbing passage so that gas in the capillary feed passage can diffuse out to the gas scrubbing passage.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: June 15, 1982
    Assignee: RCA Corporation
    Inventors: Samuel Berkman, Robert Metzl
  • Apparatus for molding a recorded disc
    Patent number: 4334849
    Abstract: An apparatus for molding recorded discs includes a pair of opposed mold plates at least one of which is adapted to move toward and away from the other. The mold plates have opposed surfaces which are adapted to form a mold cavity therebetween. A center plate is mounted in each of the mold plates with each center plate having a surface adjacent the opposed surface of the mold plate. One of the center plates has a passage therethrough with a center hole forming pin slidably mounted in the passage. The one center plate has an annular groove in the surface of the passage adjacent the end surface of the center plate. The groove is adapted to receive some of the molding material to form a seal between the center plate and the center hole forming pin and thereby minimize the extent of the formation of flash on the surface of the molded disc.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: June 15, 1982
    Assignee: RCA Corporation
    Inventor: Marvin D. Bock
  • Method of forming an improved gate member for a gate injected floating gate memory device
    Patent number: 4334347
    Abstract: An improved gate injected, floating gate memory device is described having improved charge retention and endurance characteristics is described in which the barrier height for the injection of charge (electrons or holes) into the floating gate is reduced. This is accomplished by utilizing a layer of semi-insulating polycrystalline silicon between the control electrode and the insulating layer over the floating gate.
    Type: Grant
    Filed: August 6, 1980
    Date of Patent: June 15, 1982
    Assignee: RCA Corporation
    Inventors: Norman Goldsmith, Sheng T. Hsu
  • Method and apparatus for determining minority carrier diffusion length in semiconductors
    Patent number: 4333051
    Abstract: Method and apparatus are provided for determining the diffusion length of minority carriers in semiconductors using the constant-magnitude surface-photovoltage (SPV) method. A servo system maintains a constant predetermined value of the SPV. A novel capacitance-pickup electrode couples the SPV to a preamplifier in the measurement system and functions to reduce SPV drift. A keyboard or computer is used to select both the operating optical wavelength of an adjustable monochromator and a network to compensate for the wavelength dependent sensitivity of a photodetector used to measure the illumination intensity (photon flux) on the semiconductor. Measurements of the relative photon flux for a plurality of wavelengths are plotted against the reciprocal of the optical absorption coefficient of the material. A linear plot of the data points is extrapolated to zero intensity.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: June 1, 1982
    Assignee: RCA Corporation
    Inventor: Alvin M. Goodman
  • Use of silicide to bridge unwanted polycrystalline silicon P-N junction
    Patent number: 4333099
    Abstract: Polysilicon lines are utilized for interconnecting the various elements of CMOS devices. The polysilicon lines are doped with whatever dopant conveniently suits the processing step, to form an undesired PN junction. The junction is electrically short-circuited, preferably by a polysilicided section extending across the junction.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: June 1, 1982
    Assignee: RCA Corporation
    Inventors: Donald J. Tanguay, Charles E. Weitzel
  • Method of making electrically programmable control gate injected floating gate solid state memory transistor
    Patent number: 4332077
    Abstract: A non-volatile memory structure of the floating gate type is described wherein current carriers are injected onto the floating gate from the control gate as distinguished from the prior art which injects current carriers into the floating gate from the substrate. This invention teaches that by tailoring the capacitance between the control gate and the floating gate and the capacitance between the floating gate and the substrate different field intensities are created in the region between the floating gate and the control gate and in the region between the substrate and the floating gate. When the field intensity across the capacitor formed between the control gate and the floating gate is greater than the field intensity across the capacitor formed between the floating gate and the substrate, current carriers will be injected onto the floating gate from the control gate.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: June 1, 1982
    Assignee: RCA Corporation
    Inventor: Sheng T. Hsu
  • Injection laser diode array having high conductivity regions in the substrate
    Patent number: 4331938
    Abstract: An improved semiconductor injection laser diode array having reduced interaction between the elements of the array. The array comprises a substrate, an active layer and a capping layer with a separate electrical contact to the capping layer for each element of the array and a common electrical contact to the substrate. The reduced interaction is obtained by regions of higher electrical conductivity extending through the substrate towards the p-n junction from those portions of the substrate surface opposed to the contacts to the capping layer and by separate electrical contacts to each of these higher conductivity regions. The higher conductivity regions provide a lower resistivity path for current flowing through the p-n junction, thus reducing current spreading.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: May 25, 1982
    Assignee: RCA Corporation
    Inventors: Albert C. Limm, James T. O'Brien, Thomas V. Colgrove, Paul Nyul
  • Technique for uniform stylus configuration
    Patent number: 4330915
    Abstract: A technique for manufacturing a uniform configuration for at least two video disc styli, each stylus having a shank and a tip at one end of the shank, comprising the step of attaching an edge of a first plate of shank material to one edge of a strip of tip material different from the shank material, the strip having a face thereof oriented along a predetermined crystallographic plane. The strip is cut into the individual tips while the plate remains attached to the strip. The plate is then separated into the individual shanks to form the separate styli, whereby the orientation of the crystallographic plane with respect to the shank is uniform for all styli.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: May 25, 1982
    Assignee: RCA Corporation
    Inventor: Eugene O. Keizer
  • Optical line width measuring apparatus and method
    Patent number: 4330213
    Abstract: Optical monitoring of the lateral dimensions of a pattern disposed on a substrate in the form of a wafer or mask is accomplished by testing for the lateral dimensions of a diffraction grating test pattern disposed adjacent the pattern. A beam of monochromatic light such as from a laser is diffracted by the test pattern and detectors determine the intensity of the diffracted beams. The detectors are disposed in a plane orthogonal to the plane of the test pattern and to the direction of the grating lines. The detectors are selectively spaced from each other according to the periodicity d of the grating and the width of the grating lines a is determined from a relationship of the detected intensities of the beams.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: May 18, 1982
    Assignee: RCA Corporation
    Inventors: Hans P. Kleinknecht, Heinrich Meier
  • High density information record lubricants
    Patent number: 4330583
    Abstract: High density information records comprising a conductive carbon-loaded polyvinylchloride record are lubricated with a fractionated methylalkylsiloxane lubricant which contains an hydroxylated amine and or its quaternary salt in an amount sufficient to reduce sensitivity of the records to moisture.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: May 18, 1982
    Assignee: RCA Corporation
    Inventors: Pabitra Datta, Eugene S. Poliniak
  • Positive resist for electron beam and x-ray lithography and method of using same
    Patent number: 4330671
    Abstract: Copolymers of an aziridine and sulfur dioxide are disclosed which are useful as positive radiation resists for use in electron beam and x-ray lithography.
    Type: Grant
    Filed: November 14, 1980
    Date of Patent: May 18, 1982
    Assignee: RCA Corporation
    Inventor: Thomas R. Pampalone