Patents by Inventor Hiroyuki Sakurai

Hiroyuki Sakurai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20020185735
    Abstract: A bump connection is formed by stacking at least two metallic balls of different kinds of metals on a conductor of an electronic component such as a semiconductor device. The bump connection is obtained by forming the metallic balls using metallic wires. An apparatus for forming the connection includes a support, capillary member for having a wire pass therethrough, a pair of clamps for clamping the wire, and a “torch” (e.g., electrode, gas flame) which heats the tip of the wire, forming the ball. Successive balls can be formed by this apparatus atop the initially formed ball to provide a stacked configuration.
    Type: Application
    Filed: July 25, 2002
    Publication date: December 12, 2002
    Applicant: International Business Machines Corporation
    Inventors: Hiroyuki Sakurai, Keizo Sakurai
  • Patent number: 6455785
    Abstract: A bump connection is formed by stacking at least two metallic balls of different kinds of metals on a conductor of an electronic component such as a semiconductor device. The bump connection is obtained by forming the metallic balls using metallic wires. An apparatus for forming the connection includes a support, capillary member for having a wire pass therethrough, a pair of clamps for clamping the wire, and a “torch” (e.g., electrode, gas flame) which heats the tip of the wire, forming the ball. Successive balls can be formed by this apparatus atop the initially formed ball to provide a stacked configuration.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: September 24, 2002
    Assignee: International Business Machines Corporation
    Inventors: Hiroyuki Sakurai, Keizo Sakurai
  • Publication number: 20020047514
    Abstract: An organic EL display device comprises an organic EL element PX in which a self light-emitting layer is held between an anode and a cathode, and a pixel switch SW′ for pixels formed of the organic EL element PX. Particularly, the pixel switch SW′ includes a source electrode and a drain electrode which is formed together with the anode on an interlayer insulating film so as to reflect the light laterally emitted from the self light-emitting layer.
    Type: Application
    Filed: October 19, 2001
    Publication date: April 25, 2002
    Inventors: Hiroyuki Sakurai, Michiya Kobayashi, Norihiko Kamiura, Yoshiro Aoki
  • Publication number: 20020001763
    Abstract: An imide-based photosensitive resin composition comprised of (1) a photosensitive imidosiloxane oligomer comprised of a reaction product of an imidosiloxane oligomer having a functional group reactive with an epoxy group and an epoxy compound having a photosensitive group, (2) an isocyanate having an unsaturated bond, (3) a photopolymerization initiator, and (4) an organic solvent, an insulating film obtained by curing the same, and a process for production of such an insulating film.
    Type: Application
    Filed: June 26, 2001
    Publication date: January 3, 2002
    Applicant: Ube Industries, Ltd.
    Inventors: Hiroshi Yasuno, Yoshiaki Watanabe, Hiroyuki Sakurai
  • Publication number: 20010015713
    Abstract: A liquid crystal display realizes high resolution without enlarging a frame area of an array substrate in the display. The display connects analog switch pairs each consisting of a p-TFT and an n-TFT to signal lines, respectively. Among the TFTs, those having the same polarity and connected to adjacent signal lines are provided with drain electrodes that are connected to a video bus through a common contact hole. Sharing the contact holes among the TFTs enables the switch pairs to be juxtaposed at fine pixel pitches.
    Type: Application
    Filed: February 21, 2001
    Publication date: August 23, 2001
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masaki Miyatake, Yasuyuki Hanazawa, Hiroyuki Sakurai, Masakatsu Kitani
  • Patent number: 6096480
    Abstract: A photosensitive polyimidosiloxane composition comprising a polyimidosiloxane comprising 15-80 mole percent of the units, ##STR1## wherein X represents CO, O or a direct bond and R.sub.3 represents an aromatic residue containing a photosensitive group with an unsaturated hydrocarbon group, and 85-20 mole percent of the units, ##STR2## wherein X is as defined above, each R.sub.4 independently represents a divalent hydrocarbon residue, each R.sub.5 independently represents an alkyl group of 1-3 carbon atoms and 1 represents an integer of 3-30, a finely divided inorganic filler, and an organic solvent. The composition provides films having excellent light transmittance.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: August 1, 2000
    Assignee: Ube Industries, Ltd.
    Inventors: Seiji Ishikawa, Hiroshi Yasuno, Hiroyuki Sakurai
  • Patent number: 6083754
    Abstract: A method of continuous flow analysis is provided which enables a plurality of color-forming components contained in a sample to be simultaneously analyzed with utmost ease. The method involves irradiating the sample with a measuring light which generates a wavelength having absorption bands with respect to such color-forming components, measuring the absorbance of each of the components in a color-formed state while the components are being adjusted stepwise in their color-forming state, and comparing the resultant absorbances of the components with each other. Preferably, a plurality of measuring cells are used to stepwise adjust the sample in its color-forming state, the measuring cells being connected in tandem such that a color former and/or a masking agent are incorporated in the sample while the latter is being caused to successively flow through these cells so that the sample is adjusted in its color-forming state at each of the measuring cells and measured in respect of its absorbances.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: July 4, 2000
    Assignee: Mitsubishi Materials Corporation
    Inventors: Hiroyuki Sakurai, Yutaka Hayashibe, Minoru Takeya, Yasumasa Sayama
  • Patent number: D310846
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: September 25, 1990
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Hiroyuki Sakurai