Patents by Inventor Kunihiko Yamaguchi

Kunihiko Yamaguchi 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: 20240118611
    Abstract: An object of the present invention is to provide a transfer film and a photosensitive composition, with which a film having excellent low moisture permeability and excellent scratch resistance can be formed. The transfer film of the present invention is a transfer film including a temporary support and a photosensitive layer, in which the photosensitive layer contains a polymer A and a compound ?, the polymer A has a repeating unit (a) having a carboxy group linked to a main chain by a linking group having 1 or more carbon atoms, and the compound ? has a structure b0 which reduces an amount of the carboxy group included in the polymer A by exposure.
    Type: Application
    Filed: September 15, 2023
    Publication date: April 11, 2024
    Applicant: FUJIFILM Corporation
    Inventors: Kunihiko KODAMA, Keigo YAMAGUCHI
  • Patent number: 6998878
    Abstract: To speed up the operation of a decoder circuit, reduce the power consumption of the decoder circuit and increase the cycle, each circuit such as a buffer, a predecoder and a main decoder in the decoder circuit includes a semiconductor logic circuit in which the number of columns of transistors for pulling down at an output node is small, even if the number of inputs is many and the true and a complementary output signal having approximately the same delay time are acquired and the output pulse length of each circuit in the decoder circuit is reduced. With this arrangement, the operation of the decoder circuit can be sped up, the power consumption can be reduced, the cycles can be increased and, in a semiconductor memory, for example, access time and power consumption can be reduced and the cycles can be increased.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: February 14, 2006
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Kazuo Kanetani, Hiroaki Nambu, Kaname Yamasaki, Takeshi Kusunoki, Keiichi Higeta, Kunihiko Yamaguchi, Fumihiko Arakawa
  • Publication number: 20040169527
    Abstract: To speed up the operation of a decoder circuit, reduce the power consumption of the decoder circuit and increase the cycle, each circuit such as a buffer, a predecoder and a main decoder in the decoder circuit is composed by a semiconductor logic circuit wherein the number of columns of transistors for pulling down at an output node is small even if the number of inputs is many and the true and a complementary output signal having approximately the same delay time are acquired and the output pulse length of each circuit in the decoder circuit is reduced.
    Type: Application
    Filed: January 12, 2004
    Publication date: September 2, 2004
    Inventors: Kazuo Kanetani, Hiroaki Nambu, Kaname Yamasaki, Takeshi Kusunoki, Keiichi Higeta, Kunihiko Yamaguchi, Fumihiko Arakawa
  • Patent number: 6677782
    Abstract: To speed up the operation of a decoder circuit, reduce the power consumption of the decoder circuit and increase the cycle, each circuit such as a buffer, a predecoder and a main decoder in the decoder circuit is composed by a semiconductor logic circuit wherein the number of columns of transistors for pulling down at an output node is small even if the number of inputs is many and the true and a complementary output signal having approximately the same delay time are acquired and the output pulse length of each circuit in the decoder circuit is reduced. According to the present invention, the operation of the decoder circuit can be sped up, the power consumption can be reduced, the cycles can be increased and in a semiconductor memory for example, the reduction of access time and power consumption and the increase of the cycles are enabled.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: January 13, 2004
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Kazuo Kanetani, Hiroaki Nambu, Kaname Yamasaki, Takeshi Kusunoki, Keiichi Higeta, Kunihiko Yamaguchi, Fumihiko Arakawa
  • Publication number: 20020196053
    Abstract: To speed up the operation of a decoder circuit, reduce the power consumption of the decoder circuit and increase the cycle, each circuit such as a buffer, a predecoder and a main decoder in the decoder circuit is composed by a semiconductor logic circuit wherein the number of columns of transistors for pulling down at an output node is small even if the number of inputs is many and the true and a complementary output signal having approximately the same delay time are acquired and the output pulse length of each circuit in the decoder circuit is reduced.
    Type: Application
    Filed: August 29, 2002
    Publication date: December 26, 2002
    Inventors: Kazuo Kanetani, Hiroaki Nambu, Kaname Yamasaki, Takeshi Kusunoki, Keiichi Higeta, Kunihiko Yamaguchi, Fumihiko Arakawa
  • Patent number: 6369617
    Abstract: To speed up the operation of a decoder circuit, reduce the power consumption of the decoder circuit and increase the cycle, each circuit such as a buffer, a predecoder and a main decoder in the decoder circuit include a semiconductor logic circuit wherein the number of columns of transistors for pulling down an output node is small even if the number of inputs is large, and the true output signal and a complementary output signal having approximately the same delay time are acquired and the output pulse length of each circuit in the decoder circuit is reduced. By virtue of this arrangement, the operation of the decoder circuit can be sped up, the power consumption can be reduced, the cycles can be increased and, in a semiconductor memory, for example, the reduction of access time and power consumption and the increase of the cycles are enabled.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: April 9, 2002
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Kazuo Kanetani, Hiroaki Nambu, Kaname Yamasaki, Takeshi Kusunoki, Keiichi Higeta, Kunihiko Yamaguchi, Fumihiko Arakawa
  • Publication number: 20020017923
    Abstract: To speed up the operation of a decoder circuit, reduce the power consumption of the decoder circuit and increase the cycle, each circuit such as a buffer, a predecoder and a main decoder in the decoder circuit is composed by a semiconductor logic circuit wherein the number of columns of transistors for pulling down at an output node is small even if the number of inputs is many and the true and a complementary output signal having approximately the same delay time are acquired and the output pulse length of each circuit in the decoder circuit is reduced.
    Type: Application
    Filed: April 24, 2001
    Publication date: February 14, 2002
    Inventors: Kazuo Kanetani, Hiroaki Nambu, Kaname Yamasaki, Takeshi Kusunoki, Keiichi Higeta, Kunihiko Yamaguchi, Fumihiko Arakawa
  • Patent number: 6034912
    Abstract: A memory portion and a logic circuit portion of a semiconductor device are formed on a single semiconductor substrate in which a first logic circuit block and a second logic circuit block are formed in different areas and the second logic circuit is located between a pair of memory blocks. Data stored in the pair of memory blocks are transmitted to the second logic circuit block for processing via a memory peripheral circuit. A result of the data processing is transmitted to the first logic circuit block or an external device via an input/output circuit provided in the second logic circuit block. A clock signal entered at the center portion of the semiconductor chip is supplied to a plurality of first state clock distributing circuits equidistantly disposed from the center portion and then to a plurality of second stage clock distributing circuits at least equidistantly disposed from each of the first state clock distributing circuits.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: March 7, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Isomura, Atsushi Shimizu, Keiichi Higeta, Tohru Kobayashi, Takeo Yamada, Yuko Ito, Kengo Miyazawa, Kunihiko Yamaguchi
  • Patent number: 5898636
    Abstract: A semiconductor integrated circuit device having a memory portion and a logic circuit portion formed with a same semiconductor substrate comprising a first logic circuit block, a second logic circuit block disposed in an area different from an area in which the first logic circuit block is disposed, and a pair of memory blocks oppositely disposed so that the second logic circuit block comes in between. Data stored in the pair of memory blocks are transmitted to the second logic circuit block for processing via a memory peripheral circuit provided on the second logic circuit block. A result of the data processing is transmitted to the first logic circuit block or an external device via an input/output circuit provided in the second logic circuit block.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: April 27, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Isomura, Atsushi Shimizu, Keiichi Higeta, Tohru Kobayashi, Takeo Yamada, Yuko Ito, Kengo Miyazawa, Kunihiko Yamaguchi
  • Patent number: 5644548
    Abstract: A dynamic random access memory device is provided having a dynamic memory cell, a word line coupled to the dynamic memory cell, a data line coupled to the dynamic memory cell, a precharge circuit coupled to the data line, a word driver coupled to the word line and a decoder coupled to the word driver. A plurality of address lines coupled to the decoder. The decoder has a first logic circuit whose inputs are connected to the plurality of address lines. The decoder also has a latch circuit whose input is connected to an output of the first logic circuit and whose output is connected to the word line.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: July 1, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Goro Kitsukawa, Takao Watanabe, Ryoichi Hori, Noriyuki Honma, Kunihiko Yamaguchi, Kiyoo Ito, Masahiro Iwamura, Ikuro Masuda
  • Patent number: 5587952
    Abstract: A dynamic random access memory is provided which includes word lines for accessing memory cells, data lines for transferring information from the memory cells, and rewrite amplifiers connected to the data lines for rewriting the information to corresponding memory cells. Read pre-amplifiers are also provided for sensing the information, together with common data lines for transferring output signals of the read pre-amplifiers. Each of the read pre-amplifiers has two insulated gate field-effect transistors, gates of which are connected to the data lines, and sources/drains of which are connected with the common data lines, such that the common data lines do not form current paths with the data lines. In addition, the read pre-amplifiers are activated before the rewrite amplifiers.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: December 24, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Goro Kitsukawa, Takao Watanabe, Ryoichi Hori, Noriyuki Honma, Kunihiko Yamaguchi, Kiyoo Itoh
  • Patent number: 5583817
    Abstract: Read signals to be outputted in the unit of bits from a packaged RAM are received to produce complementary output signals, and these output signals and the non-inverted and inverted signals of expected values are individually inputted to two logic circuits, so that the outputs of the logic circuits are compared by a coincidence/incoincidence circuit to produce a decision output.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: December 10, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Etsuko Kawaguchi, Keiichi Higeta, Yasuhiro Fujimura, Kunihiko Yamaguchi
  • Patent number: 5523966
    Abstract: Disclosed is a static type memory cell with high immunity from alpha ray-induced soft errors. The memory cell has a coupling capacitance C.sub.c between two data storage nodes 1 and 2. The p-well (or p-substrate) in which the driver-MOS transistors MN3, MN4 and the transfer MOS transistors MN1, MN2 are formed is connected to a V.sub.bb generator. The voltage V.sub.bb is set lower than the low level V.sub.L of the memory cell signal potential. Even when the potential variation .DELTA.V.sub.L of the low-voltage side node 2 is large, the parasitic diode present between the n-type diffusion layer corresponding to the source or drain of MN1-MN4 and the p-well (or p-substrate) does not turn on. Erroneous operations can therefore be prevented.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: June 4, 1996
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Youji Idei, Hiroaki Nambu, Kazuo Kanetani, Toru Masuda, Kunihiko Yamaguchi, Kenichi Ohhata, Takeshi Kusunoki
  • Patent number: 5398201
    Abstract: A circuit technique suitable to attain a high speed of a memory which is constructed in a manner such that memory cells include a field effect transistor and peripheral circuits include a bipolar transistor and a field effect transistor. According to the invention, a bipolar transistor whose collector is connected to a differential amplifier and which supplies a current to the differential amplifier in accordance with a signal which is inputted to a base or an emitter is added, and a bipolar transistor to supply a current only when writing to bit lines is connected. According to the invention, a high speed of the access time when information is read out by switching the selection bit line is accomplished. Further, the charge/discharge time of the bit line when information is written is reduced and a high speed of the writing time can be also accomplished.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: March 14, 1995
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Hiroaki Nambu, Noriyuki Homma, Kunihiko Yamaguchi, Hisayuki Higuchi, Kazuo Kanetani, Youji Idei, Ken'ichi Ohata, Yoshiaki Sakurai, Masanori Odaka, Goro Kitsukawa
  • Patent number: 5255225
    Abstract: A semiconductor integrated circuit device including a level conversion circuit in which the simplifying of the circuit and the increasing of the speed of operation have been attained is provided.A pair of complementary output signals amplified to a required signal level by a current switch circuit including differential transistors which receive an input signal and a reference voltage are inputted into a pair of emitter follower circuits. An emitter follower output transistor is driven by an output signal from one emitter follower circuit, while an N-channel MOSFET provided between the output transistor and a current source used as a load is driven by an output signal from the other emitter follower circuit, to obtain a level-amplified output signal from an emitter of the output transistor.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: October 19, 1993
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Hiroaki Nambu, Noriyuki Homma, Kunihiko Yamaguchi, Kazuo Kanetani, Hisayuki Higuchi, Youji Idei, Kenichi Ohata, Yoshiaki Sakurai, Masanori Odaka, Goro Kitsukawa, Nobuo Tamba, Masayuki Ohayashi, Toshiro Hiramoto, Kayoko Saito
  • Patent number: 5163022
    Abstract: The disclosure includes feeding a current I.sub.R to only BIT lines selected, or feeding current I.sub.R transiently to only the BIT lines switched from unselected to selected states; and a sense amplifier for detecting the difference between the currents flowing in selected BIT lines to read out stored information, wherein current I.sub.R and cell current I.sub.cell have a relation of I.sub.R >I.sub.cell. The BiC MOS memory has high speed, low power and high integration density. Diodes are provided between the memory cell and the BIT lines.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: November 10, 1992
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Noriyuki Homma, Hiroaki Nambu, Kunihiko Yamaguchi, Tohru Nakamura, Youji Idei, Kazuo Kanetani, Kenichi Ohhata, Yoshiaki Sakurai, Hisayuki Higuchi
  • Patent number: 5086414
    Abstract: A semiconductor circuit having a plurality of circuit blocks, each having latch circuits each one thereof being controlled by an internally provided clock signal for preventing malfunction of the circuit. Each circuit is provided with the latch function so that the cycle time is made shorter than the access time. Moreover, the latch means are driven in such a manner that the adjoining ones are prevented from being put to through-state simultaneously, whereby malfunction is prevented.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: February 4, 1992
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Hiroaki Nambu, Noriyuki Homma, Kunihiko Yamaguchi, Kazuo Kanetani, Youji Idei, Kenichi Ohhata, Yoshiaki Sakurai, Jun Etoh
  • Patent number: 4865823
    Abstract: A method for recovering gallium, which comprises a capturing step of contacting an aqueous solution containing gallium to a chelating agent containing a water-insoluble substituted quinolinol as the active ingredient, to let the chelating agent capture gallium, and an eluting step of contacting an eluting solution composed of an aqueous solution of an acid or strong base containing said substituted quinolinol, to the chelating agent from the capturing step, to elute gallium therefrom.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: September 12, 1989
    Assignees: Mitsubishi Chemical Industries Limited, Nippon Light Metal Company, Ltd.
    Inventors: Yukinori Minagawa, Minoru Tanaka, Kunihiko Yamaguchi, Kazumasa Arai, Gouichi Muramatsu
  • Patent number: 4809052
    Abstract: A semiconductor memory device is provided such as the type having flip-flop memory cells each including two bipolar transistors in cross connection with each other. In certain embodiments, at least a part of a Schottky barrier diode or capacitor in the memory cell is formed under a digit line. This memory device is greatly reduced in its required area, and the Schottky barrier diode and capacitor are negligibly influenced by the digit line. In other embodiments, it is arranged to provide different electrodes for the Schottky barrier diode and the capacitor to optimize construction in a minimized space.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: February 28, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Yasushiro Nishioka, Takeo Shiba, Hiroshi Shinriki, Kiichiro Mukai, Akihisa Uchida, Ichiro Mitamura, Keiichi Higeta, Katsumi Ogiue, Kunihiko Yamaguchi, Noriyuki Sakuma
  • Patent number: 4733372
    Abstract: Herein disclosed is a bipolar memory having redundancy, which can be produced with a small area. In this semiconductor memory having a body memory for storing data and a spare memory for relief of fault bit of the body memory, a row is selected by cutting fuses in a decoder. Fundamentally signal lines such as word lines are not provided with fuses. Other parts including a power source and a reference voltage source are provided with fuses without decreasing the operating speed accompanied by only a slight increase in the area.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: March 22, 1988
    Assignees: Hitachi, Ltd., Hitachi Device Eng.
    Inventors: Hiroaki Nanbu, Kunihiko Yamaguchi, Noriyuki Honma, Kazuo Kanetani, Motoaki Matumoto, Kazuhiko Tani, Kenichi Ohata