Patents Represented by Law Firm Lowe Price Leblanc Becker & Shur
  • Patent number: 5016220
    Abstract: A testing circuit for a semiconductor memory device is provided. An AND operation is performed on the data read out from each block of a memory cell array when the bit data written into each block of the memory cell array for testing is "1", and a NOR operation is performed on the data read out from each block of the memory cell array when the bit data written into each block of the memory cell array is "0". In this manner, even when the data read out from the blocks are all inverted in their logical states through error, such error can be detected.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: May 14, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tadato Yamagata
  • Patent number: 5014554
    Abstract: An angular rate sensor has a tuning fork structure composed of vibratory components. The vibratory components include piezoelectric drive and detection elements which are joined together into a tuning fork configuration, the drive and detection elements lying in respective orthogonal planes. Leads are electrically connected to the drive and detection elements, and lead terminals are electrically connected to the leads, respectively. The vibratory components are covered with a coating which is of a material having a lower elasticity than the elasticities of the vibratory components. The coating on the vibratory components effectively reduces the propagation of unwanted vibrations, thereby reducing output signal drifts.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: May 14, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Jiro Terada, Kazumitsu Ueda, Hiroshi Takenaka, Mikio Nozu, Hiroshi Senda, Yasuhito Osada, Toshihiko Ichinose, Takahiro Manabe
  • Patent number: 5014646
    Abstract: A substrate is exposed to a gas of reactive material and an oxidizing gas. The oxidizing gas includes an ozone gas. A laser light beam is applied to the substrate through the reactive material gas and the oxidizing gas. The laser light beam activates the oxidizing gas. The activated oxidizing gas reacts with the reactive material gas to form an oxide deposited on the substrate.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: May 14, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yufuko Ito, Hideo Koseki, Toshio Kawamura, Yasuhiko Tsukikawa
  • Patent number: 5015497
    Abstract: A cathode for an electron tube in accordance with the present invention comprises: a base (2) containing not only nickel as a major element but also a reducing agent; a layer (3) of an electron-emissive substance which is applied to the base (2) and contains not only an alkaline earth metal oxide as a principal component but also a scandium oxide; and a heater for heating the layer (3).
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: May 14, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kinjiro Sano, Toyokazu Kamata, Keiji Fukuyama, Masato Saito, Keiji Watanabe
  • Patent number: 5014967
    Abstract: In a spring element according to the present invention, all channels formed in the elastomer block are mutually parallel and all cavities formed in the elastomer block, too, which are intersected by said channels, are arranged like a cubic-free-centered sphere packing in reverse order. Comprising a good mechanical lateral rigidity, a spring element according to the present invention shows exceptionally good acoustic insulating and damping facilities.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: May 14, 1991
    Assignee: WOCO Franz-Josef Wolf & Co.
    Inventors: Franz J. Wolf, Hubert Pletsch
  • Patent number: 5015507
    Abstract: A method of converting a rusted surface to a durable one comprises applying a composition for converting a rusted metal surface to form durable preparative coatings thereon, the rust conversion composition comprising a reducing agent which will function to reduce trivalent iron to divalent iron on the substrate, an organic monomer which is capable of polymerization in the presence of the reducing agent, on the surface, and a free radical initiator which will function to polymerize the organic monomer to form the durable coating.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: May 14, 1991
    Assignee: Pennzoil Products Company
    Inventors: Paul J. DesLauriers, William J. Heilman
  • Patent number: 5016282
    Abstract: Characteristic features of images of an object eye are extracted to enable non-contact detection of eye movement. Two images of the eye are focused, and a differential image is generated to eliminate background noise and to permit feature extraction to be performed. In one feature of the invention, the illuminating light is polarized for use as a reference and the reflected light is separated to two light paths, each of which is focused to form an image of the object. In one path a polarizing plate blocks the regularly reflected light from the cornea so that only a diffused reflection component of the illuminating light from the other parts of the eye is passed, while in the other path both the regularly and diffusedly reflected light components are passed. A resulting differential image emphasizes the regular reflection component from the cornea relative to the background.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: May 14, 1991
    Assignee: ATR Communication Systems Research Laboratories
    Inventors: Akira Tomono, Muneo Iida, Kazunori Ohmura
  • Patent number: 5016122
    Abstract: A device for switching a coil between a first state where it is connected between a supply source and the ground through an impedance and a second state where it is connected between an output terminal and the ground, a first switch (T.sub.REC) being arranged between the output terminal and the supply source. This switching device comprises: a diode (14) connected between the output terminal (16) and the supply source, a controlled switch (T.sub.PB) connected in parallel with the impedance between a second terminal of the coil and the ground, and a detection and control means (20, 24) connected between the diode and the power supply source for detecting the time when the voltage between the diode and the ground becomes equal to a predetermined value lower than the forward voltage drop across the diode and for thereby controlling said switch.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: May 14, 1991
    Assignee: SGS-Thomson Microelectronics S.A.
    Inventors: Thierry Meunier, Jean L. Jaffard
  • Patent number: 5016010
    Abstract: An encoder encodes input data into codes and outputs the codes. The numbers of bits required to represent the codes which are outputted from the encoder during respective first predetermined periods (such as periods for scanning a block of pixels) are predicted. The predicted numbers are added to derive a sum therefore. Such a sum is generated during each of a plurality of second predetermined periods (such as one-frame periods), which are longer than each of the first periods. An actual number of bits required to represent the output codes from the encoder is controlled in accordance with the derived sum. Differences between the predicted numbers of bits representing the output codes and the actual numbers of bits representing the output codes which are generated during the respective first periods are sequentially generated. The differences are accumulated into an accumulated value.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: May 14, 1991
    Assignee: Victor Company of Japan, Ltd.
    Inventor: Kenji Sugiyama
  • Patent number: 5016069
    Abstract: An electrically programmable non-volatile memory comprises floating gate MOS transistors (T11, T12, T13) and an array of word lines (LM1 and LM2) along rows and bit lines (LB1, LB2 and LB3) along columns. A constant-potential line (B), arranged along a column so it is positioned between a pair of bit lines, connects the source electrodes (22) of the transistors, and includes a first conductivity type diffusion. A drain electrode (21) of the first conductivity type of each transistor extends along a column to form one of the bit lines (LB1, LB2, LB3). An insulating area (24) extends along a column on the side of each bit line opposite a constant-potential line (B). A conductive area (E) corresponding to the floating gate level covers insulating area (24).
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: May 14, 1991
    Assignee: SGS-Thomson Microelectronics S.A.
    Inventor: Albert Bergemont
  • Patent number: 5012679
    Abstract: An optical sensor uses a beam waveguide embedded in a force or pressure transmitting material, in particular an elastomer. To be used as force measuring sensor, the beam waveguide is mounted on an elastic deformable body and embedded in a material that does not undergo creep under the influence of a force.
    Type: Grant
    Filed: July 11, 1989
    Date of Patent: May 7, 1991
    Assignee: Pfister GmbH
    Inventor: Hans W. Haefner
  • Patent number: 5014105
    Abstract: A complementary IC device comprises: an n-semiconductor substrate; a p-well formed within the n-substrate: a n-channel FET (field effect transistor) formed on the p-well, the n-channel FET including an n-source connected to a first grounded line and an n-drain connected to an output line; a p-channel FET formed on the n-substrate, the p-channel FET including a p-source connected to a first voltage source line and a p-drain connected to the output line; a contact p-region formed on the p-well for providing electrical connection between the p-well and a second grounded line; and a contact n-region formed on the n-substrate for providing electrical connection between the n-substrate and a second voltage source line.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: May 7, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masayuki Hata, Tsunenori Umeki
  • Patent number: 5014241
    Abstract: Each of sense amplifiers is coupled to two bit lines with another bit line being interposed therebetween. Information stored in a memory cell is read out onto one of the two bit lines coupled to each of the sense ampliers, while a reference potential is read out onto the other bit line. Outside of the two bit lines, a reference potential is respectively read out onto other bit lines adjacent to the two bit lines. The information stored in the memory cell is read out onto the other bit line between the two bit lines.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: May 7, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Mikio Asakura, Kazuyasu Fujishima, Yoshio Matsuda
  • Patent number: 5013673
    Abstract: An ion implantation method comprising doping a trench sidewall formed in the surface of a semiconductor substrate, with impurities by intermittently rotating step ion implantation carried out in the state that said sidewall is angled with respect to an ion beam, wherein;the amount of ion implantation to said sidewall is made uniform by varying the scanning velocity of the ion beam on the surface of said semiconductor substrate, at the position near to, and the position distant from, the upstream side of the beam applied to a position at which said surface of semiconductor substrate is inclined with respect to the beam.Also disclosed is a method of manufacturing a semiconductor device making use of such an ion implantation method.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: May 7, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Genshu Fuse
  • Patent number: 5013936
    Abstract: A logic circuit includes an output pull up npn bipolar transistor (15; 28; 38), an output pull down pnp bipolar transistor (16; 29; 39), a first insulated gate type transistor (11, 12; 21, 22, 23, 24; 31, 32, 33, 34) for controlling the base potential of the output pull up bipolar transistor in response to an input signal, a second insulated gate type transistor (14; 25, 26, 27; 35, 36, 37) for controlling the base potential of the output pull down bipolar transistor in response to the input signal, and an impedance element (13; 18; 30; 40) for short-circuiting the base and the collector of the output pull down bipolar transistor. The impedance element is separated from the signal input terminal, and is formed by a resistance or an insulated gate type transistor operating in response to the base potential of the pull up transistor. The output pull up and pull down transistors both have collector grounded arrangement.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: May 7, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toru Shiomi, Kimio Ueda
  • Patent number: 5013561
    Abstract: Waxy barley grain is processed by a series of processing steps to produce beta-glucan solids, a bran residue, a protein concentrate, barley oil and a maltose syrup in uncontaminated form. The process involves steps of mixing a meal produced from waxy barley grain with water, separating barley solids and a water extract, heating the water extract and separating coagulated protein and beta-glucan solids, mixing the barley solids with water and separating a bran fraction and crude starch, forming a dough from the crude starch and separating gluten and waxy barley starch from the dough, mixing the bran fraction with water and enzymes to carry out starch conversion and produce a liquid mixture, separating solids from the liquid mixture, extracting the solids with alcohol to produce oil and recovering maltose syrup from liquid remaining after separating the solids.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: May 7, 1991
    Assignee: Barco, Inc.
    Inventors: Kenneth J. Goering, Robert F. Eslick
  • Patent number: 5012719
    Abstract: A projectile is accelerated through a barrel by a high pressure hydrogen gas jet that is derived by exothermically reacting water or a water-hydrogen peroxide liquid mixture with metal or a metal hydride. The temperature of the reaction is controlled by controlling the power in a plasma discharge applied to a reaction chamber containing the liquid and particles of the metal or metal hydride. A non-vaporous metal oxide resulting from the reaction is centrifugally separated from the hydrogen that drives the projectile.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: May 7, 1991
    Assignee: GT-Devices
    Inventors: Yeshayahu S. A. Goldstein, Derek A. Tidman, David Fleischer
  • Patent number: 5014110
    Abstract: A semiconductor memory comprises a semiconductor substrate (1), word lines (200) and bit lines (3a, 3b), memory cells and sense amplifier (SA). The semiconductor substrate (1) has a major surface. The word lines (200) and bit lines (3a, 3b) intersect each other on the major surface of the substrate (1). The bit lines (3a, 3b) are arranged in the form of parallel bit line pairs. The memory cells are arranged at intersections of the word lines (200) and the bit lines (3a, 3b). The sense amplifier (SA) senses voltage differentials of the bit line pairs. Corresponding sections of the bit lines (3a, 3b) of the bit line pair are interchanged laterally on the substrate (1) along the length of the bit line pair. Corresponding sections of the bit lines (3a, 3b) of each bit line pair have the same number of joining portions (10) respectively. It is possible to provide a semiconductor memory device having a wiring structure capable of minimizing an influence due to the noise from the adjacent wiring line.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: May 7, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Shinichi Satoh
  • Patent number: 5012600
    Abstract: A frame fixation structure includes a transparent front board connected with a back board to clamp up pictures or a clock or desk sets therebetween. According to the present invention, two fastening methods are adopted, one is to set a pair of clamping means in the grooves between the front and back boards at two diagonal corners, while the other is to insert two rivet means through the two pair of symmetric holes respectively made on the front and back boards at two diagonal corners, and mount an elastic element (rubber band or the like) on the pair of rivet means to firmly retain the front and back boards together.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: May 7, 1991
    Inventor: Thomas T. M. Wang
  • Patent number: 5014096
    Abstract: An optoelectronic integrated circuit including an optical bistable circuit comprises: an optical gate device responsive to a current injected to an active layer thereof and to a first ray transmitted through the active layer for emitting first and second light rays and for controlling intensity of the first light ray in accordance with the current; and a first phototransistor serially connected with the optical gate device so arranged to receive the second light ray for causing the current to flow through the optical gate device in response to the second light ray and a set signal light ray, the first phototransistor holding flowing of the current when the second light ray is emitted. This circuit can control the first light ray incident to the optical gate device in response to a set signal light ray applied to the first phototransistor. A second phototransistor may be included for stopping emission of light by the optical gate device in response to a reset signal light ray.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: May 7, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenichi Matsuda, Jun Shibata