Patents by Inventor Kazutaka Mori

Kazutaka Mori 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: 20030087120
    Abstract: A thermal barrier coating material can prevent spall-off from occurring during operation at high temperatures and has a high heat insulating effect. A turbine parts and a gas turbine that are protected with the thermal barrier coating material are also provided. The thermal barrier coating material of the present invention comprises a ceramic layer 23, which is formed on a high temperature heat-resistant alloy base 21 to protect the base 21 from high temperatures, the ceramic layer 23 being applied via a bonding coat layer 22 provided as a metal bonding layer and is made of ZrO2 with Er2O3 added thereto as a stabilizing agent. The turbine parts and the gas turbine of the present invention are coated with the thermal barrier coating material on the surfaces thereof.
    Type: Application
    Filed: October 21, 2002
    Publication date: May 8, 2003
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Taiji Torigoe, Sunao Aoki, Kazutaka Mori, Ikuo Okada, Kouji Takahashi
  • Patent number: 6467004
    Abstract: A high speed, high performance pipelined semiconductor device is provided, such as a pipelined data processing device and memory device. In the pipeline operation, a functional circuit unit and a transmission unit are separately controlled at each pipeline stage cycle. A transmission unit between two functional circuit units is divided into N transmission units while considering a cycle time, and each divided transmission unit is assigned one pipeline stage cycle.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: October 15, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Iwamura, Shigeya Tanaka, Takashi Hotta, Tatsumi Yamauchi, Kazutaka Mori
  • Publication number: 20020096718
    Abstract: A semiconductor device having a field effect transistor formed in a semiconductor layer provided on an insulating layer is provided with a body electrode electrically connected to a channel forming region of the field effect transistor, and a back gate electrode provided below the insulating layer so as to be opposed to the channel forming region of the field effect transistor. A potential for controlling carriers of conduction type opposite to a channel formed in an upper portion of the channel forming region of the field effect transistor is applied to each of the body electrode and the back gate electrode. Thus, the withstand voltage for the drain of the field effect transistor can be increased. It is also possible to stabilize the threshold voltage of the field effect transistor. Furthermore, the threshold voltage of the field effect transistor can be changed in a stable state.
    Type: Application
    Filed: February 28, 2002
    Publication date: July 25, 2002
    Inventors: Shinichiro Mitani, Takahide Ikeda, Kazutaka Mori, Hisayuki Higuchi
  • Publication number: 20020070760
    Abstract: An integrated circuit having a CMOS circuit constituted by electrically connecting an n-type well 2, in which p-channel transistor Tp of the CMOS circuit is set, with a supply line Vdd through switching transistor Tps, and electrically connecting a p-type well 3, in which n-channel transistor Tn of the CMOS circuit is set, with supply line Vss through switching transistor Tns. Thermal runaway due to leakage current can be controlled by turning off switching transistors Tps and Tns and supplying potentials suitable for a test to the n-type well 2 and the p-type well 3 from an external unit when the integrated circuit is being tested. Fluctuations of the latch-up phenomenon and operation speed can be prevented by turning on switching transistors Tps and Tns and setting the n-type well 2 and the p-type well 3 to the voltages Vdd and Vss, respectively.
    Type: Application
    Filed: February 1, 2002
    Publication date: June 13, 2002
    Inventors: Michiaki Nakayama, Masato Hamamoto, Kazutaka Mori, Satoru Isomura
  • Patent number: 6392277
    Abstract: A semiconductor device having a field effect transistor formed in a semiconductor layer provided on an insulating layer is provided with a body electrode electrically connected to a channel forming region of the field effect transistor, and a back gate electrode provided below the insulating layer so as to be opposed to the channel forming region of the field effect transistor. A potential for controlling carriers of conduction type opposite to a channel formed in an upper portion of the channel forming region of the field effect transistor is applied to each of the body electrode and the back gate electrode. Thus, the withstand voltage for the drain of the field effect transistor can be increased. It is also possible to stabilize the threshold voltage of the field effect transistor. Furthermore, the threshold voltage of the field effect transistor can be changed in a stable state.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: May 21, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Shinichiro Mitani, Takahide Ikeda, Kazutaka Mori, Hisayuki Higuchi
  • Publication number: 20020052122
    Abstract: Well printing a specified pattern even when exposure treatment using a resist mask uses exposure light with a wavelength over 200 nm.
    Type: Application
    Filed: August 20, 2001
    Publication date: May 2, 2002
    Inventors: Toshihiko Tanaka, Norio Hasegawa, Kazutaka Mori, Ko Miyazaki, Tsuneo Terasawa
  • Publication number: 20020042007
    Abstract: Provided is a fabrication method of a semiconductor integrated circuit device, which comprises properly using a photomask having light blocking patterns made of a metal and another photomask having light blocking patterns made of a resist film upon exposure treatment, depending on the fabrication step of the semiconductor integrated circuit device.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 11, 2002
    Inventors: Ko Miyazaki, Kazutaka Mori, Norio Hasegawa, Tsuneo Terasawa, Toshihiko Tanaka
  • Publication number: 20020036534
    Abstract: A manufacturing method of a semiconductor device capable of obtaining highly reliable semiconductor devices with the realization of high integration and high speed intended is provided. During processes after a desired circuit including a CMOS static type circuit is formed on a semiconductor substrate until product shipment, a first operation of feeding a predetermined input signal to the circuit and retrieving a first output signal corresponding to it and a second operation of giving an operating condition of increasing an ON resistance value of MOSFETs constituting the CMOS static type circuit and retrieving a second output signal corresponding to the condition are conducted, and a testing step of determining a failure by the first output signal varying from the second output signal.
    Type: Application
    Filed: August 28, 2001
    Publication date: March 28, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Masaki Kouno, Masato Hamamoto, Atsushi Wakahara, Hideyuki Takahashi, Keiichi Higeta, Mitsugu Kusunoki, Kazutaka Mori
  • Patent number: 6359472
    Abstract: An integrated circuit having a CMOS circuit constituted by electrically connecting an n-type well 2, in which p-channel transistor Tp of the CMOS circuit is set, with a supply line Vdd through switching transistor Tps, and electrically connecting a p-type well 3, in which n-channel transistor Tn of the CMOS circuit is set, with supply line Vss through switching transistor Tns. Thermal runaway due to leakage current can be controlled by turning off switching transistors Tps and Tns and supplying potentials suitable for a test to the n-type well 2 and the p-type well 3 from an external unit when the integrated circuit is being tested. Fluctuations of the latch-up phenomenon and operation speed can be prevented by turning on switching transistors Tps and Tns and setting the n-type well 2 and the p-type well 3 to the voltages Vdd and Vss, respectively.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: March 19, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Michiaki Nakayama, Masato Hamamoto, Kazutaka Mori, Satoru Isomura
  • Publication number: 20020006555
    Abstract: In order to shorten the time required to change or correct a mask pattern over a mask, light-shielding patterns formed of a resist film for integrated circuit pattern transfer are partly provided over a mask substrate constituting a photomask in addition to light-shielding patterns formed of a metal for the integrated circuit pattern transfer.
    Type: Application
    Filed: June 18, 2001
    Publication date: January 17, 2002
    Inventors: Norio Hasegawa, Toshihiko Tanaka, Joji Okada, Kazutaka Mori, Ko Miyazaki
  • Publication number: 20010009383
    Abstract: An integrated circuit having a CMOS circuit constituted by electrically connecting an n-type well 2, in which p-channel transistor Tp of the CMOS circuit is set, with a supply line Vdd through switching transistor Tps, and electrically connecting a p-type well 3, in which n-channel transistor Tn of the CMOS circuit is set, with supply line Vss through switching transistor Tns. Thermal runaway due to leakage current can be controlled by turning off switching transistors Tps and Tns and supplying potentials suitable for a test to the n-type well 2 and the p-type well 3 from an external unit when the integrated circuit is being tested. Fluctuations of the latch-up phenomenon and operation speed can be prevented by turning on switching transistors Tps and Tns and setting the n-type well 2 and the p-type well 3 to the voltages Vdd and Vss, respectively.
    Type: Application
    Filed: February 26, 2001
    Publication date: July 26, 2001
    Inventors: Michiaki Nakayama, Masato Hamamoto, Kazutaka Mori, Satoru Isomura
  • Patent number: 6194915
    Abstract: To provide a semiconductor integrated circuit having a CMOS circuit constituted by electrically connecting an n-type well 2, in which one transistor Tp for constituting the CMOS circuit is set, with a first power-supply-voltage line Vdd through a switching transistor Tps, and electrically connecting a p-type well 3 in which the other transistor Tn for constituting the CMOS circuit is set with a second power-supply-voltage line Vss through a switching transistor Tns. Moreover, the semiconductor integrated circuit is constituted so that thermal runaway due to leakage current can be controlled by turning off the switching transistors Tps and Tns and supplying a potential suitable for a test to the n-type well 2 and the p-type well 3 from an external unit when the semiconductor integrated circuit is being tested.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: February 27, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Michiaki Nakayama, Masato Hamamoto, Kazutaka Mori, Satoru Isomura
  • Patent number: 6029220
    Abstract: A high speed, high performance pipelined semiconductor device is provided, such as a pipelined data processing device and memory device. In the pipeline operation, a functional circuit unit and a transmission unit are separately controlled at each pipeline stage cycle. A transmission unit between two functional circuit units is divided into N transmission units while considering a cycle time, and each divided transmission unit is assigned one pipeline stage cycle.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: February 22, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Iwamura, Shigeya Tanaka, Takashi Hotta, Tatsumi Yamauchi, Kazutaka Mori
  • Patent number: 5657264
    Abstract: A semiconductor memory comprises a write driver which is provided to correspond to respective data line and by which data lines connected with a memory cell through the control of a word line are driven in a write operation. The write driver includes MOSFETs of first group and MOSFETs of second group. In a case where a write enable signal does not designate the write operation, the MOSFETs of the first group are normally in ON states to pull up the data lines. Besides, in a case where the write enable signal designates the write operation, each of them operates in accordance with the value of input data, to maintain the ON states and pull up the corresponding data line in case of driving the data line to a "high" level and to fall into OFF states in case of driving the data line to a "low" level. On the other hand, the MOSFETs of the second group are normally in OFF states.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: August 12, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Tatsumi Yamauchi, Masahiro Iwamura, Kazutaka Mori
  • Patent number: 5639572
    Abstract: An interconnector material for use in electrochemical cells having Y.sub.2 O.sub.3 -stabilized ZrO.sub.2 as a solid electrolyte, said interconnector material comprising a lanthanum chromite material of the following general formula:(La.sub.1-x Sr.sub.x)(Cr.sub.1-y M.sub.y)O.sub.3,where M is Zr or Ti, x is in the range of 0.1 to 0.2, and y is in the range of 0.05 to 0.2.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: June 17, 1997
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Kazutaka Mori, Hitoshi Miyamoto, Tsuneaki Matsudaira
  • Patent number: 5590361
    Abstract: An extra large number-of-input complex logic circuit, employed inside a microprocessor for performing a large number of controls and arithmetic operations, is constructed utilizing N(N.gtoreq.2) number of a unit logic circuit each comprising M(M.gtoreq.1) input CMOS logic circuits and one bipolar transistor, whereby respective outputs are integrated to produce one output in response to M.times.N number input signals to provide a high speed, high density integration and low power consumption microprocessor.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: December 31, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Iwamura, Tatsumi Yamauchi, Shigeya Tanaka, Kazutaka Mori
  • Patent number: 5408676
    Abstract: In a parallel computer system in which many microprocessor elements are disposed at least in a two dimensional array to communicate data therebetween at a high speed, n bidirectional buses XBi and m bidirectional YBi are respectively arranged in X and Y directions to dispose m by n data processor elements CPUij at intersections of the buses XBi and YBj, thereby connecting these elements respectively to the associated buses XBi and YBj. Each processor element has a unit for selectively establishing a connection between the bus XBi and the bus YBj which are coupled thereto. In a data transfer between two elements sharing neither one of the bidirectional buses in the X and Y directions, there is selected an element which is connected to one of the X-directional-buses linked to one of the elements and which is connected to, one of the Y-directional buses linked to the other one thereof to use the selected element as a relay for establishing a conductive route between the buses.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: April 18, 1995
    Assignee: Hitachi, Ltd.
    Inventor: Kazutaka Mori
  • Patent number: 5362998
    Abstract: A composite circuit device of bipolar transistors and MOS transistors has a series connection of an NPN transistor for pull-up and a PNP transistor for pull-down. The composite circuit device has independent base drive circuits so provided that the base of the NPN transistor for pull-up is electrically isolated from the base of the PNP transistor for pull-down during the on-off switching operation. The composite circuit device is also provided with base precharge circuitry for pre-charging the base of the PNP transistor during the off operation state thereof. A composite circuit is also provided with circuitry for enhancing the turn-on switching speed of the pull-down PNP transistor. Additionally, a composite circuit of bipolar transistors and MOS transistors is constituted by a switch having a high input impedance and low on-resistance which can be applied as a component of an electronic circuit.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: November 8, 1994
    Assignee: Hitachi Ltd.
    Inventors: Masahiro Iwamura, Hideo Maejima, Atsuo Watanabe, Kazutaka Mori
  • Patent number: 5285414
    Abstract: A semiconductor memory comprises a write driver which is provided to correspond to respective data line and by which data lines connected with a memory cell through the control of a word line are driven in a write operation. The write driver includes MOSFETs of first group and MOSFETs of second group. In a case where a write enable signal does not designate the write operation, the MOSFETs of the first group are normally in ON states to pull up the data lines. Besides, in a case where the write enable signal designates the write operation, each of them operates in accordance with the value of input data, to maintain the ON states and pull up the corresponding data line in case of driving the data line to a "high" level and to fall into OFF states in case of driving the data line to a "low" level. On the other hand, the MOSFETs of the second group are normally in OFF states.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: February 8, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Tatsumi Yamauchi, Masahiro Iwamura, Kazutaka Mori
  • Patent number: 5038056
    Abstract: In order to reduce undesirable output noise, an output circuit is provided which includes a first output MOSFET which is interposed between an output terminal and a first power source voltage, and a second output MOSFET which is interposed between the output terminal and a second power source voltage. In particular, in accordance with one aspect of the invention, a feedback circuit is interposed between the output terminal and the gate of the first output MOSFET or/and between the output terminal and the gate of the second output MOSFET to negatively feedback voltage to provide a gentle level change for the output voltage. In other embodiments, a short-circuit arrangement is provided which is interposed between the gate and source of the first output MOSFET or/and between the gate and source of the second output MOSFET.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: August 6, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Koide, Mikio Yamagishi, Kazutaka Mori