Patents by Inventor Hiromi Tosaki

Hiromi Tosaki 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).

  • Patent number: 6272020
    Abstract: A semiconductor device-mounting substrate is provided with a semiconductor device, a capacitor device, and a wiring substrate. The wiring substrate has a space in which the capacitor device should be located, and the capacitor device is locate in the space. Terminals of a driving power supply wiring for the semiconductor device are provided on a surface of the space, and the terminals are connected with the capacitor device.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: August 7, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Tosaki, Takaji Takenaka, Kazutoshi Takahashi, Norio Sengoku, Toshitada Netsu
  • Patent number: 4608316
    Abstract: A ceramic wiring board comprising a silica board having pores of several ten to several hundred .ANG. in diameter amounting to 5 to 20 vol % of the insulating layer, and a process for producing the same, which comprises heat-treating a silicon alkoxide to form a fine silica powder and sintering the fine powder. This board has good mechanical characteristics and a high signal propagation speed.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: August 26, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Gyozo Toda, Tsuyoshi Fujita, Hiromi Tosaki, Takashi Kuroki
  • Patent number: 4603008
    Abstract: Disclosed herein is a critical temperature sensitive resistor material which comprises 60 to 90% by weight of VO.sub.2 and 40 to 10% by weight of RuO.sub.2. This material exhibits hysteresis of resistance that decreases remarkably over a temperature range in which the resistance varies greatly, and is hence used for measuring the temperature maintaining a high precision.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: July 29, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Tosaki, Hideo Arima, Akira Ikegami, Yasuji Kamata
  • Patent number: 4587040
    Abstract: A thick film thermistor composition is prepared by mixing metal oxide powders of at least two of Mn, Co and Ni, and oxide powder of Ru as a noble metal, firing the resulting mixture, thereby obtaining a compound oxide thermistor of spinel structure, pulverizing the resulting compound oxide thermistor, and mixing and kneading the resulting thermistor powder with glass powder and oxide powder of Ru for adjusting a resistance.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: May 6, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Tosaki, Teruo Mozume, Hideo Arima, Akira Ikegami
  • Patent number: 4547625
    Abstract: A method for manufacturing the insulating layers of a glass multilayer wiring board from a mixture of (1) 30-90 wt. % of a borosilicate glass consisting of 55-75 wt. % of SiO.sub.2, 13-25 wt. % of B.sub.2 O.sub.3, 5-13 wt. % of Al.sub.2 O.sub.3, each 1-5 wt. % of PbO, MgO, and BaO, and each 1-2 wt. % of Na.sub.2 O and K.sub.2 O and (2) 70-10 wt. % of a silica glass, is provided.
    Type: Grant
    Filed: July 7, 1983
    Date of Patent: October 15, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Tosaki, Hirayoshi Tanei, Akira Ikegami, Nobuyuki Sugishita
  • Patent number: 4490429
    Abstract: The multilayer circuit board is constituted of an inorganic insulating material such as a crystallizable glass, crystalline oxide or noncrystallized glass; a conductive material such as a metal or a mixture of a metal with noncrystallized glass; a resistor material consisting of a mixture of a conductive material with the crystallizable glass or noncrystallized glass; and a dielectric material consisting of a mixture of a barium titanate-other oxide mixture with the noncrystallized glass or crystallizable glass, of a lead-containing perovskite type oxide or of a lead-containing laminar bismuth oxide, said board has a multilayer structure wherein a first insulating layer; a first resistor circuit or alternatively first capacitor circuit or alternatively first resistor-capacitor circuit; a second insulating layer; a second resistor circuit or alternatively second capacitor circuit or alternatively second resistor-capacitor circuit are superposed in this order, provided that the second insulating layer has a thr
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: December 25, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Tosaki, Nobuyuki Sugishita, Akira Ikegami
  • Patent number: 4347166
    Abstract: A thermistor composition comprises oxide powder of at least two of Mn, Co, and Ni, and an oxide powder of Ru as a noble metal.
    Type: Grant
    Filed: February 22, 1979
    Date of Patent: August 31, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Tosaki, Hideo Arima, Teruo Mozume, Akira Ikegami, Tokio Isogai, Ichiro Tsubokawa
  • Patent number: 4160227
    Abstract: This specification discloses a thermistor composition comprising a thermistor characteristic powder, a bismuth containing borosilicate glass frit and an electrically conductive powder comprising a mixture of a noble metal powder and ruthenium oxide powder which is selected from RuO.sub.2 + Ag and RuO.sub.2 + Au wherein the mixing ratio of the metal oxide thermistor characteristic powder, the glass and the electrically conductive powder is in the area of the quadrilateral ABCD in the triangular diagram of the accompanying FIG.
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: July 3, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Akira Ikegami, Hiromi Tosaki, Jun Yamada, Teruo Mozume, Ichiro Tsubokawa, Kiyoshi Sakashita