Patents Assigned to Fujitsu Ltd.
  • Patent number: 5660741
    Abstract: A small glass electrode and process for preparation thereof are disclosed. This small glass electrode is characterized in that said glass electrode, which has a bonded structure comprises a reference electrode composed of silver/silver chloride, a glass substrate having a pad embedded therein, said pad being composed of gold or platinum and circuit-connected to the reference electrode, and a silicon substrate having a (100) plane selectively etched by the anisotropic etching technique and comprising a groove for injecting an electrolyte composed of an aqueous solution containing chlorine such as KCl, or HCl, at least one hole for holding the electrolyte and a glass film formed in a portion corresponding to the reference electrode. By this structure, the small glass electrode can be easily manufactured at a low cost.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 26, 1997
    Assignee: Fujitsu Ltd.
    Inventors: Hiroaki Suzuki, Akio Sugama, Naomi Kojima
  • Patent number: 5659200
    Abstract: A method of producing a semiconductor device includes the steps of fitting a bottom part of a radiator block within a tapered hole which is provided at a bottom of a recess of a jig and positioning on the jig a lead frame having inner and outer leads and wherein the lead frame has an opening at a central part thereof, the opening being located above a top surface of the radiator block. The semiconductor chip is then mounted on the top surface part of the radiator block and bonded to the lead frame by plurality of wires.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: August 19, 1997
    Assignee: Fujitsu, Ltd.
    Inventors: Michio Sono, Kouji Saito, Masashi Takenaka, Masanori Yoshimoto
  • Patent number: 5652167
    Abstract: Micro-structures comprising at least a structural member, which is liable to be bent under an external force and formed so as to leave a space between the member and another member liable to be bent and/or other rigid component, are successfully treated using a treating liquid, without suffering permanent deformation resulting from the use of the treating liquid, by removing the micro-structures from the liquid to an environment having a pressure less than the atmospheric pressure; or displacing the micro-structures from the treating liquid to another treating liquid having a smaller surface tension than that of the former liquid, and then removing the micro-structures from the latter liquid; or drying the micro-structures removed from the treating liquid by exposing the same to vapor of a liquid having a smaller surface tension than that of the treating liquid; or removing the micro-structures from the treating liquid to the atmosphere, and drying them using an energy beam of high intensity or an ultrasonic
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: July 29, 1997
    Assignees: Fujitsu Ltd., Fujitsu VLSI Ltd.
    Inventors: Motoo Nakano, Hiroshi Nomura, Masaya Katayama, Toshimi Ikeda, Fumihiko Inoue, Junichi Ishikawa, Masahiro Kuwamura
  • Patent number: 5644414
    Abstract: A hologram of a virtual object or an object which actually exists is formed and a solid image is displayed. 3-dimensional information of the object to be displayed is divided into regions in the depth direction. Depth images are formed as 2-dimensional images where are seen from a plurality of points which are obtained by finely dividing the hologram forming surface for every region. A phase distribution at the hologram forming surface is calculated from the depth images and displayed on a liquid crystal display or the like as an electronic hologram. A reference light is irradiated onto the display and is converted into an optical wave front, thereby displaying a solid image. When forming a hologram recording medium, a zone image corresponding to each of the finely divided exposure regions of a dry plate is exposed multiple times.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: July 1, 1997
    Assignee: Fujitsu, Ltd.
    Inventors: Masayuki Kato, Hirokazu Aritake, Manabu Ishimoto, Noriko Sato, Masato Nakashima
  • Patent number: 5637915
    Abstract: A semiconductor device includes a semiconductor chip having top and bottom surfaces, upper leads electrically coupled to the semiconductor chip, where a first gap is formed between the upper leads and the top surface of the semiconductor chip, lower leads electrically coupled to the semiconductor chip, where a second gap is formed between the lower leads and the bottom surface of the semiconductor chip, and an encapsulating resin which encapsulates the semiconductor chip so as to maintain the first and second gaps.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: June 10, 1997
    Assignees: Fujitsu Ltd., Kyushu Fujitsu Electronics Ltd
    Inventors: Mitsutaka Sato, Junichi Kasai, Masanori Yoshimoto, Kouichi Takeshita
  • Patent number: 5637426
    Abstract: A method for forming a resist pattern comprising the steps of: placing a transparent mask substrate on an object coated with a resist; drawing a mask pattern directly on the transparent mask substrate with an ink jetter; exposing the resist to light with intervention of the mask pattern; peeling off the mask substrate; and developing the resist, thereby forming a predetermined resist pattern.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: June 10, 1997
    Assignee: Fujitsu, Ltd.
    Inventor: Katsumi Uchikawa
  • Patent number: 5635973
    Abstract: An image reading and printing unit includes a carriage movable in a scan direction perpendicular to a transport direction of a sheet that is transported, a carriage moving part for moving the carriage in the scan direction, a platen arranged parallel to the scan direction with the transported sheet interposed between the platen and the carriage for cooperating a transfer of an image onto the sheet, a print head mounted on the carriage for printing the image on the sheet in a printing mode by moving from a receded position to a print position towards the sheet on the platen under the cooperation of the platen, an image sensor mounted on the carriage together with the print head for reading an image printed on the transported sheet in a reading mode, and a sensor moving part for moving the image sensor to make contact with the sheet on the platen in the reading mode so as to read the image printed on the sheet.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: June 3, 1997
    Assignee: Fujitsu Ltd.
    Inventor: Akira Yamada
  • Patent number: 5630416
    Abstract: An ultrasonic diagnostic probe includes: a swinging mechanism for swinging a piezoelectric vibrator provided in an accommodating part at an end of a tube-like shaft, around an axis parallel with an ultrasonic transmission and reception face; and a rotating mechanism for rotating the piezoelectric vibrator around an axis perpendicular to the ultrasonic transmission and reception face. The rotating mechanism includes: a pedestal provided with a semicylindrical part; a seat pedestal in which a concave part having a curvature that matches the semicylindrical part is formed so as to rotatably support the pedestal by the semicylindrical part being engaged with the concave part; and a swinging wire for urging the pedestal into a swinging motion.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: May 20, 1997
    Assignee: Fujitsu, Ltd.
    Inventors: Shiro Uchikura, Narutaka Nakao
  • Patent number: 5629560
    Abstract: The integrated circuit package includes a package body, an integrated circuit chip enclosed airtight in the package body, a lead provided at a lower portion of the package body for connecting the integrated circuit chip to an external circuit, and air blasting means for cooling the package body by forced air cooling. The package body has, at an upper portion thereof, a heat radiation region formed from a fin and an air blasting region in which the air blasting means is disposed. A ventilation flue is formed between the heat radiation region and the air blasting region. This package is particularly superior in its heat radiation properties.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 13, 1997
    Assignees: Fujitsu Ltd, PFU Limited
    Inventors: Tadashi Katsui, Katsuhiko Nakata, Takashi Kitahara
  • Patent number: 5628575
    Abstract: An automatic paper feeder of a document input device includes a pick roller 20, separator pads 68 that come into contact with the pick roller 20, a first pair of pick springs 58, and a second pick spring 60. The first pick springs 58 are disposed on the upstream side of the second pick spring 60 in the direction of conveying the paper. The first pick springs 58 are disposed on the regions on both outer sides of the width of the separator pads 68 in the axial direction of the roller, and the second pick spring 60 is disposed at a central position in the width of the separator pad 68. The first and second pick springs 58 and 60 are integrally formed as a spring unit using a single metal plate, and a force of contact of the first pick springs 58 upon the pick roller 20 on the upstream side is smaller than a force of contact of the second pick spring 60 upon the pick roller 20 on the downstream side. The separator pad 68 is formed by branching a web 70 of a rubber sheet into fork-like pad units.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: May 13, 1997
    Assignees: Fujitsu Ltd., PFU Ltd.
    Inventors: Shuichi Morikawa, Masahiko Futatsuka, Satoshi Ishida, Yasunori Miyauchi, Minoru Masuda
  • Patent number: 5625494
    Abstract: An optical band-pass filter adapted for enabling mutually independent fine adjustments of two pass bands. The optical band-pass filter comprises a first filter having a first pass band, first and second reflective films for respectively reflecting the transmitted light and the reflected light obtained from the first filter film, and a second filter film having a second pass band different from the first pass band and serving to combine the light out of the first and second reflective films with each other.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: April 29, 1997
    Assignee: Fujitsu Ltd.
    Inventor: Nobuhiro Fukushima
  • Patent number: 5624791
    Abstract: A mask includes a transparent layer which is transparent with respect to a light which is used for an exposure, and a mask pattern layer which is formed on the transparent layer. At least a portion of the mask patterns layer is made up solely of a phase shift layer for transmitting the light, so that a phase shift occurs between a phase of the light transmitted through the phase shift layer and a phase of the light transmitted through a portion of the mask having no phase shift layer.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 29, 1997
    Assignee: Fujitsu Ltd.
    Inventors: Toshiaki Kawabata, Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi, Yuichiro Yanagishita
  • Patent number: 5618202
    Abstract: A connector for coaxial cables in the form of three flat cables. The coaxial cables are arranged in the cable holder in three rows, so that bared signal conductors extend straight from the cable holder in the insulating body of the connector and ground conductors or ground wires remain in the cable holder. The connector includes wide ground contacts which are inserted in the cable holder to contact the ground conductors or ground wires of the coaxial cables under pressure, and three rows of signal contacts to which bared ends of signal conductors of the coaxial cables are soldered. Three rows of signal contacts are supported by three parallel support plates, respectively. The ground contacts are arranged between first and second rows of the signal contacts and between second and third rows of the signal contacts. A ground shell surrounds the signal contacts whereby a multi-layer strip line structure is formed.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: April 8, 1997
    Assignee: Fujitsu Ltd.
    Inventors: Takeshi Okuyama, Kouji Watanabe, Nobuo Yatsu, Masahiko Sakuraoka, Junichi Akama
  • Patent number: 5618744
    Abstract: According to the present invention, using a computer aided design system for designing semiconductor integrated circuits wherein a plurality of logic cells forming a circuit net are disposed on a semiconductor chip according to a net list specifying a connection pattern assigned among input and output terminals of a plurality of logic cells and a wiring length connecting the terminals.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: April 8, 1997
    Assignees: Fujitsu Ltd., Fujitsu VLSI Ltd.
    Inventors: Rieko Suzuki, Kiyoshi Saida, Kazushige Itazu, Eiji Fujine, Yoshihiro Kamiya, Yoshitaka Uchida, Takako Murakami, Teruhisa Tsuyuki, Kazunori Kawazoe, Takeshi Shimazaki, Yukimi Nishiwaki
  • Patent number: 5616440
    Abstract: A photosensitive member including a transparent substrate, a transparent conductor layer formed on the transparent substrate and a photosensitive layer formed on the transparent conductor layer. An electrophotographic recording apparatus comprises the photosensitive member, voltage application means for uniformly charging electrically a surface of the photosensitive member, exposure means for effecting exposure from the back of the photosensitive member and forming an electrostatic latent image on the photosensitive member, development means for developing the electrostatic latent image to a toner image, and transfer means for transferring the toner image to recording paper.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: April 1, 1997
    Assignee: Fujitsu, Ltd.
    Inventors: Toru Takahashi, Tsuneo Watanuki, Fumio Takei, Norio Sawatari, Yasushige Nakamura
  • Patent number: 5609688
    Abstract: A semiconductor device producing method includes the steps of (a) subjecting a substrate which is transported by first transport means to at least a first process within a first unit, and (b) subjecting the substrate which is subjected to the step (a) and is transported by second transport means other than the first transport means to at least a second process within a second unit.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: March 11, 1997
    Assignee: Fujitsu Ltd.
    Inventors: Tetsuya Hayashi, Kazunori Okuyama, Tsuyoshi Inomata, Koji Nozaki, Minoru Hirose
  • Patent number: 5610080
    Abstract: A semiconductor device includes a semiconductor device body, a ring part, and connecting parts. The semiconductor device body includes a resin package and a plurality of leads extending outwardly from the resin package. The ring part is made of a resin and surrounds the semiconductor device body. The connecting parts are made of a resin and connect the semiconductor device body and the ring part, so that the semiconductor device body is supported by the ring part via the connecting parts.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: March 11, 1997
    Assignee: Fujitsu Ltd.
    Inventor: Yoji Murakami
  • Patent number: 5611047
    Abstract: An information delivery apparatus to be employed within an information network system. A plurality of such apparatuses as part of an information network will successively store and deliver information throughout the network. Each apparatus can store information received from an upstream apparatus and relay that information to a downstream apparatus. If the apparatus has no space in its storage unit to store the information received from the upstream apparatus, the apparatus will record identification data of the information in a table of passed information and when the storage unit thereof has a free space to receive the information, will send a repeat request to the upstream apparatus containing the identification data of the information.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: March 11, 1997
    Assignee: Fujitsu Ltd.
    Inventors: Kenji Wakamiya, Osamu Saito
  • Patent number: 5610643
    Abstract: In a printing head which makes an ink jet system printing and includes a pressure chamber supplied with an ink, a nozzle which communicates to the pressure chamber, a vibration plate which forms one wall of the pressure chamber; and pressure applying mechanism for applying pressure to the vibration plate so as to eject the ink from the nozzle, the pressure applying mechanism includes a wire for applying the pressure on the vibration plate, and a driving part for displacing the wire. At least the pressure chamber is detachably mounted with respect to the pressure applying mechanism.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: March 11, 1997
    Assignee: Fujitsu, Ltd.
    Inventors: Michinori Kutami, Akira Nakazawa, Hideyuki Kikuchi, Katsunori Yamagishi
  • Patent number: 5607535
    Abstract: A method of manufacturing a laminated piezoelectric actuator including at least an actuator element which has a plurality of piezoelectric ceramics layers and internal electrode layers laminated alternately and external electrodes which connect alternate internal electrode layers in two groups.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: March 4, 1997
    Assignee: Fujitsu, Ltd.
    Inventors: Mineharu Tsukada, Koji Omote