Patents Represented by Attorney, Agent or Law Firm Loeb & Loeb LLP
  • Patent number: 6055197
    Abstract: In a semiconductor memory device, assuming that the ratio of a memory capacity of a region of a memory array per one of elements, which are simultaneously activated in the memory array in which x elements (x is an integer of two or more) are simultaneously activated and which is divided into a plurality of repair regions, each of which has at least two elements, to a memory capacity in one of the repair regions corresponding to one of spare element groups is y (y is an integer of one or more), each of the repair regions is designed so that a plurality of elements are simultaneously activated in its own repair region, and each of the spare element groups is designed so that the number of spare elements simultaneously activated in each of the spare element groups is one. Thus, it is possible to effectively reduce electric current consumption in the total of redundant control circuits.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: April 25, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Daisuke Kato, Yohji Watanabe
  • Patent number: 6055006
    Abstract: The object of the invention is to provide a small-size image forming apparatus in which a plurality of light emitting element arrays are easily aligned with each other at high accuracy. Each of light emitting element arrays of Y, M, C, K comprises a plurality of LED elements arranged in a straight line and is driven by a color image signal of each color. On the reference plate disposed on the support are arranged head substrates having light emitting element arrays of each color in such a manner that the light emitting element arrays are nearly in parallel with each other. On a peripheral surface of each photosensitive drum, an electrostatic latent image forming position is established where an electrostatic image is formed by receiving light from each of the light emitting element arrays, and toner of the specified color is supplied to the specified electrostatic latent image forming apparatus by each developing device.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: April 25, 2000
    Assignee: Kyocera Corporation
    Inventor: Shunji Murano
  • Patent number: 6053975
    Abstract: In a crystal holding apparatus, a corrugated portion between a seed crystal and a straight cylindrical portion of a monocrystal is held by holding portions of a lifting jig during a monocrystal growth process in which the seed crystal is brought into contact with material melt and is subsequently pulled while being rotated. In the crystal holding apparatus, an attachment member for establishing surface contact with the corrugated portion of the crystal is attached to the tip end of each holding portion of the lifting jig. Therefore, the monocrystal can be held reliably, so that the breaking and falling down of the monocrystal during the pulling operation can be prevented.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: April 25, 2000
    Assignee: Shin-Etsu Handotai Co., Ltd.
    Inventors: Makoto Iida, Eiichi Iino, Masanori Kimura, Shozo Muraoka
  • Patent number: 6055655
    Abstract: Functional circuits such as a processor, an SRAM, a DRAM and a flash-EEPROM are mounted on a semiconductor chip. Of these functional circuits, for example, the flash-EEPROM which fluctuates a potential of the semiconductor chip is separated from the other circuits by means of a separating region provided in the semiconductor chip. In addition, the separating region is put in contact with the entire side faces of the semiconductor chip.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: April 25, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tomomi Momohara
  • Patent number: 6050870
    Abstract: In a display device in which glass substrates are pasted together and a display material is filled therebetween and a method of manufacturing the same, provided is a display device composed of soda glass chemically strengthened by substituting atoms having an ionic radius larger than that of sodium atoms for sodium atoms on the surfaces of the glass substrates, and a method of manufacturing a display device wherein a chemical strengthening is carried out by dipping a soda glass substrate or a cell for the display device manufactured by using the substrate in a solution or a molten solution of a salt including cations having an ionic radius larger than that of sodium atoms.
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: April 18, 2000
    Assignee: Seiko Instruments, Inc.
    Inventors: Mitsuru Suginoya, Kazuo Shimada
  • Patent number: 6051515
    Abstract: In the dielectric ceramic of this invention, a perovskite-type crystal phase is precipitated as a main crystal phase and a complex oxide crystal phase other than the perovskite-type crystal phase is precipitated as a sub-crystal phase, wherein the above perovskite-type crystal phase contains Mg, W, an iron family metal elements and/or Zn and Ba and/or Sr as metal elements, and the complex oxide crystal phase contains W, and Ba and/or Sr as metal elements and the main crystal phase and the sub-crystal phase have a peak intensity ratio by X-ray diffraction of formula (1):I.sub.112 /I.sub.211 <0.10 (1)wherein I.sub.112 represents a peak intensity of the (112) plane in a tetra-gonal system in the above sub-crystal phase, and I.sub.211 represents a peak intensity of the (211) plane in a rhombohedral system in the main crystal phase.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: April 18, 2000
    Assignee: Kyocera Corporation
    Inventor: Nobuki Hiramatsu
  • Patent number: 6050811
    Abstract: A hand held, flammable gas igniter includes a handle with a thumb activated trigger extending, out of the handle top, a child safety lock mounted in the handle bottom, a cylinder filled with a flammable gas enclosed within the handle and a hollow tube extending forward from the handle to deliver the gas, when ignited, to a desired location, such as charcoal in a barbecue or wood in a fireplace. When the child safety lock is activated the trigger is released so that it can move downward and forward into the handle causing an L-shaped rocker to pivot forward, opening a gas flow valve on the cylinder, delivering the flammable gas to the end of the hollow tube. The movement of the trigger also activates a piezoelectric spark generator, delivering an igniting spark to the gas at the end of the tube.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: April 18, 2000
    Assignee: Duraflame, Inc.
    Inventor: Matthew Stein
  • Patent number: 6050276
    Abstract: There are disclosed an apparatus and method for cleaning a precision substrate through use of high-frequency- or ultrasonic-applied cleaning liquid. An object substrate is horizontally held and rotated. High-frequency- or ultrasonic-applied cleaning liquid is jetted toward the surface of the object substrate from first cleaning liquid jetting unit disposed above the object substrate, and the nozzle of the first cleaning liquid jetting unit is moved in parallel with the surface of the object substrate. Cleaning liquid is also fed toward the central portion of the surface of the object substrate from cleaning liquid feed-to-center unit during cleaning. In the cleaning apparatus and method, a sufficiently high cleaning speed is attained.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: April 18, 2000
    Assignee: Pre-Tech Co., Ltd.
    Inventors: Yasuyuki Harada, Mitsuru Nakada, Tadahiro Ohmi
  • Patent number: 6050414
    Abstract: A container for holding liquid can be used, for example, as a promotional item or novelty item for a business establishment, business, product, or service. The container includes a vessel having a translucent circumferential side wall and a solid transparent window formed at a first location in the side wall. A design element is mounted at a second location on the side wall opposite the first location. When the vessel is filled with liquid to a height above the transparent window and design element, a magnified impression of the design element can be observed through the transparent window. The container can be used, for example, as a promotional item to advertise or promote a product, service, business, or business establishment, or alternatively as a novelty item for personal enjoyment and entertainment purposes.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: April 18, 2000
    Inventors: David M. Saffron, Jack Saffron
  • Patent number: 6052526
    Abstract: A data structure and method for dynamic type resolution in mapping abstract syntax notation (ASN.1) onto an object-oriented programming language (C++). For each information object class in ASN.1, two C++ classes are generating, a "set class" that models information object sets in that ASN.1 class, and a "class class" that models information objects in that ASN.1 class. For each information object set in an ASN.1 module class, a C++ data member is defined and a virtual resolve method is generated that may be invoked during the decoding process to permit dynamic extension of each information object set. A coder environment is provided in C++ that has pointers to instances of the various C++ module classes, enabling selective control of the type resolution information presented to the decoder.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: April 18, 2000
    Assignee: Vertel Corporation
    Inventor: Thomas R. Chatt
  • Patent number: 6050672
    Abstract: A cartridge for an ink jet printer capable of directly or indirectly reducing the capacity of a wasted ink recovery unit without causing any restraint to a printing function, an ink jet printer adapted to accommodate this cartridge, and an ink jet printer capable of reducing a printing time without causing any restraint to the printing function are provided. In the cartridge for an ink jet printer, containing a printing article and removably mounted in an ink jet printer, a wasted ink recovery unit for storing wasted ink produced in the ink jet printer is provided in a cartridge case. This allows the capacity of the wasted ink recovery unit to be determined on the basis of a cartridge exchanging frequency. The ink jet printer adapted to accommodate this cartridge does not require a wasted ink recovery unit, so that its size can be reduced correspondingly.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: April 18, 2000
    Assignee: Seiko Epson Corporation
    Inventor: Kunihiko Matsuhashi
  • Patent number: 6051885
    Abstract: A highly integrated semiconductor device is made using a high precision manufacturing process having a comparatively small number of process steps. The device is substantially free of misalignment between structures formed with respect to openings formed in the middle of layers. An interlayer insulating film with an opening is formed on a first conductor, and a second conductor is deposited on the resultant structure. Part of the second conductor enters the opening, thereby producing a depression in the second conductor, which has a sharp-angled bottom situated at the horizontal center of the opening. A film made of, for example, a nitride is deposited on the second conductor to fill the depression. Thereafter, this film is removed such that part of it remains in the depression. Using the remaining film as a mask, the second conductor is removed to the same level as the interlayer insulting film.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: April 18, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Seiko Yoshida
  • Patent number: 6051442
    Abstract: The disclosed device and method can inspect the CMOS integrated circuit devices at high precision on the basis of the static current of the voltage supply connected thereto. A CMOS integrated circuit comprises: at least one CMOS circuit having at least one P-channel MOS transistor and at least one N-channel MOS transistor; a first pad connected to a source of the P-channel MOS transistor; a second pad connected to a source of the N-channel MOS transistor; a third pad connected to an N-type substrate or an N-type well formed with the P-channel MOS transistor; and a fourth pad connected to a P-type substrate or a P-type well formed with the N-channel MOS transistor.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: April 18, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tadahiro Kuroda
  • Patent number: 6049482
    Abstract: A non-volatile semiconductor memory device includes a memory cell array constituted of a plurality of memory cell units arranged on a semiconductor substrate in rows and columns, each of the memory cell units is constituted of a plurality of electrically rewritable memory cells connected to each other, and has a selective transistor at one end, and a plurality of bit lines arranged in parallel in a column direction and connected to corresponding one of the memory cell units at the one end of the memory cell unit, and a selective gate line connected to a gate of the selective transistor.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 11, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Seiichi Aritome, Kazuhiro Shimizu
  • Patent number: 6049237
    Abstract: A voltage/current converting circuit whose gain is hard to be influenced by the fluctuation in process has a constant current source for generating a constant current; a shunt circuit for flowing the constant current generated by said constant current source to a first and second current paths, the first current path flowing a first current corresponding to an input voltage, and the second current path flowing a second current defined as a difference between the constant current and the first current; and an output circuit for taking out a current bearing a predetermined relationship with the first current.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: April 11, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takehiko Nakao
  • Patent number: 6049518
    Abstract: An optical disc reproducing apparatus includes a semiconductor laser, an objective lens converging a laser beam from the semiconductor laser on a recording surface of an optical disc, a polarization plane rotating unit selectively rotating the plane of polarization of the laser beam according to the thickness of a substrate of the optical disc, and a polarizing filter selectively shading a peripheral portion of the laser beam having the rotated plane of polarization. In one embodiment, a numerical aperture changing unit includes a non-patterned twisted nematic liquid crystal, and the polarizing filter includes a polarizing film having a polarization characteristics at its peripheral portion.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: April 11, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yoichi Tsuchiya, Seiji Kajiyama, Yasuyuki Kanou, Shuichi Ichiura
  • Patent number: 6049398
    Abstract: The facsimile machine connected with a personal computer such that it can send image data to the personal computer. The facsimile machine first requests the personal computer to supply data about communication capability of the personal computer such as resolution mode (scanning line density) and coding method to the personal computer. Upon this request, the personal computer outputs necessary data to the facsimile machine. If a user of the facsimile machine sets to scan the image at a resolution finer than a resolution of the personal computer, then resolution is automatically changed to a rougher resolution to conform with the personal computer. The facsimile machine then scans the image at the modified resolution. The scanned image is coded by the same coding method as the personal computer. The image scanned and coded in line with the communication capability of the personal computer is then stored in a memory and transmitted to the personal computer from the memory.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: April 11, 2000
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Yoshifumi Tanimoto
  • Patent number: 6048395
    Abstract: A method for producing a silicon single crystal in accordance with the Czochralski method. The single crystal is grown in an N.sub.2 (V) region where a large amount of precipitated oxygen and which is located within an N region located outside an OSF ring region, or is grown in a region including the OSF ring region, N.sub.1 (V) and N.sub.2 (V) regions located inside and outside the OSF ring region, in a defect distribution chart which shows a defect distribution in which the horizontal axis represents a radial distance D (mm) from the center of the crystal and the vertical axis represents a value of F/G (mm.sup.2 /.degree.C..multidot.min), where F is a pulling rate (mm/min) of the single crystal, and G is an average intra-crystal temperature gradient (.degree.C./mm) along the pulling direction within a temperature range of the melting point of silicon to 1400.degree. C.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: April 11, 2000
    Assignee: Shin-Etsu Handotai Co., Ltd.
    Inventors: Makoto Iida, Satoshi Suzuki, Eiichi Iino, Masanori Kimura, Shozo Muraoka
  • Patent number: 6048323
    Abstract: A device for receiving and holding a removable ultrasound transducer and a tocodynamometer against the exterior of the abdomen of the patient is disclosed. The device comprises an improved transducer support plate which is maintained in fixed contact with the abdomen of the patient by fastening pads, including an adhesive hydrogel and a belt encircling the patient to provide the necessary counterforces to the transducer support plate that is simple to attach and remove from a patient.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: April 11, 2000
    Inventor: Edward H. Hon
  • Patent number: D423544
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: April 25, 2000
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Kazuo Yamamoto, Gwenael Nicolas