Patents by Inventor Atsuhiro Suzuki

Atsuhiro Suzuki 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: 7812391
    Abstract: A nonvolatile semiconductor memory device includes a semiconductor substrate having a plurality of active regions separately formed by a plurality of trenches formed in a surface of the substrate at predetermined intervals, a first gate insulating film formed on an upper surface of the substrate corresponding to each active region, a gate electrode of a memory cell transistor formed by depositing an electrical charge storage layer formed on an upper surface of the gate insulating film, a second gate insulating film and a control gate insulating film sequentially, an element isolation insulating film buried in each trench and formed from a coating type oxide film, and an insulating film formed inside each trench on a boundary between the semiconductor substrate and the element isolation insulating film, the insulating film containing nontransition metal atoms and having a film thickness not more than 5 ?.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: October 12, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuhiro Matsuo, Masayuki Tanaka, Atsuhiro Suzuki
  • Patent number: 7812405
    Abstract: A semiconductor device includes a first interlayer insulating film formed above a semiconductor substrate, a first source line formed on the first interlayer insulating film, a second interlayer insulating film formed on the first source line, a plurality of bit lines formed on the second interlayer insulating film so as to extend in a direction, the bit lines being arranged at same width and same width, a third interlayer insulating film formed above the bit lines, a second source line formed on the third interlayer insulating film, and a source shunt line formed between the second and third interlayer insulating films, the source shunt line electrically connecting the first and second source lines to each other, the source shunt line being located between the bit lines so as to extend in the same direction as the bit lines, the source shunt line including a width same as the bit lines.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: October 12, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Atsuhiro Suzuki
  • Patent number: 7658081
    Abstract: The compressor has a differential pressure type flow rate detector that obtains the pressure in an upstream passage and the pressure in a downstream passage to detect a refrigerant flow rate within a refrigerant passage. The detector has an accommodation chamber, and a partition body slidably accommodated within the accommodation chamber. The partition body comparts the accommodation chamber into a high pressure chamber to which the pressure in the upstream passage is introduced, and a low pressure chamber to which the pressure in the downstream passage is introduced. The compressor has an oil separator having an oil introduction passage connected to the oil separating chamber and a high pressure introduction passage introducing the pressure in the upstream passage to the high pressure chamber. The oil introduction passage introduces the oil separated from the refrigerant by the oil separator to a pressure zone other than a discharge pressure zone.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: February 9, 2010
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Akinobu Kanai, Hiroyuki Nakaima, Yoshinori Inoue, Atsuhiro Suzuki
  • Publication number: 20100018386
    Abstract: The compressor is provided with an oil separator for separating oil from refrigerant gas introduced into a separation chamber, an annular space for reserving oil separated from the refrigerant gas, and a reservoir chamber for reserving the thus separated oil. The oil separator is provided in a cylindrical hole formed in a discharge chamber from which the refrigerant gas is discharged and a lid for partitioning the cylindrical hole from the discharge chamber is provided in the cylindrical hole. The oil separator introduces the refrigerant gas from the discharge chamber to the separation chamber via the introduction passage. The annular space is provided around the lid and connected to the reservoir chamber via an oil passage. The reservoir chamber is connected to a crank chamber of a pressure lower than that in the discharge chamber.
    Type: Application
    Filed: March 20, 2007
    Publication date: January 28, 2010
    Applicant: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Yoshinori Inoue, Hirokazu Mesaki, Masaya Sakamoto, Atsuhiro Suzuki, Akinobu Kanai, Tomoji Tarutani, Naoki Koeda, Osamu Nakayama
  • Publication number: 20090256190
    Abstract: According to an aspect of the present invention, there is provided a semiconductor device including: a semiconductor substrate; active areas with island-like shapes formed on the semiconductor substrate; an element isolation area surrounding the active areas and including an element isolation groove formed on the semiconductor substrate and an element isolation film embedded into the element isolation groove; gate insulating films each formed on corresponding one of the active areas and having a first end portion that overhangs from the corresponding active area onto the element isolation area at one side and a second end portion that overhangs from the corresponding active area onto the element isolation area at the other side, wherein an overhang of the first end portion has a different length from a length of an overhang of the second end portion.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 15, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Atsuhiro SUZUKI, Hiroshi SHIMODE, Takeshi SHIMANE, Norihisa ARAI, Minori KAJIMOTO
  • Publication number: 20090189213
    Abstract: A nonvolatile semiconductor memory device includes a semiconductor substrate having a plurality of active regions separately formed by a plurality of trenches formed in a surface of the substrate at predetermined intervals, a first gate insulating film formed on an upper surface of the substrate corresponding to each active region, a gate electrode of a memory cell transistor formed by depositing an electrical charge storage layer formed on an upper surface of the gate insulating film, a second gate insulating film and a control gate insulating film sequentially, an element isolation insulating film buried in each trench and formed from a coating type oxide film, and an insulating film formed inside each trench on a boundary between the semiconductor substrate and the element isolation insulating film, the insulating film containing nontransition metal atoms and having a film thickness not more than 5 ?.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 30, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuhiro MATSUO, Masayuki TANAKA, Atsuhiro SUZUKI
  • Patent number: 7498638
    Abstract: An ESD protection circuit for a semiconductor device including a bonding pad receiving a first power supply voltage; an interconnect layer provided in an underside of the bonding pad so as to be electrically conductive with the bonding pad; a semiconductor substrate provided with a first well of a predetermined conductive type in a predetermined region of a surface layer of the substrate, which first well receives a second power supply voltage having a different voltage from the first power supply voltage and provided with a confronting region confronting the underside of the interconnect layer over a dielectric layer, and the first well of the semiconductor substrate, the dielectric layer, the bonding pad and the interconnect layer constitute a capacitor.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: March 3, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Atsuhiro Suzuki
  • Publication number: 20090039444
    Abstract: A semiconductor device includes a semiconductor substrate including an upper surface having a first region including a pair of first impurity diffusion regions and a first channel region located between the impurity diffusion regions and a second region including a recess having a predetermined depth relative to the upper surface, a first gate insulating film, a first gate electrode of a first transistor supplying a first voltage, a second gate insulating film having a second thickness larger than a first thickness of the first gate insulating film, an upper surface of the second gate insulating film located at a same level as an upper surface of the first gate insulating film, and a second gate electrode of a second transistor supplying a second voltage being higher than the first voltage.
    Type: Application
    Filed: July 28, 2008
    Publication date: February 12, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Atsuhiro SUZUKI
  • Publication number: 20080110188
    Abstract: A compressor connected to an external refrigerant circuit is disclosed. The compressor is provided with a housing, a passage forming member coupled to an outer surface of the housing, and a differential pressure type flow rate detector provided in the passage forming member. The flow rate detector obtains the pressure in an upstream passage and the pressure in a downstream passage to detect a refrigerant flow rate within the refrigerant passage. The flow rate detector is provided with an accommodation chamber, a partition body, a compression spring, and a spring seat defining a maximum stroke amount of the partition body. The spring seat exists closer to the passage forming member side than a partition surface comparting the housing and the passage forming member, and is in contact with the partition surface.
    Type: Application
    Filed: November 6, 2007
    Publication date: May 15, 2008
    Inventors: Yoshinori Inoue, Hirokazu Mesaki, Atsuhiro Suzuki, Akinobu Kanai
  • Publication number: 20080104984
    Abstract: The compressor has a differential pressure type flow rate detector that obtains the pressure in an upstream passage and the pressure in a downstream passage to detect a refrigerant flow rate within a refrigerant passage. The detector has an accommodation chamber, and a partition body slidably accommodated within the accommodation chamber. The partition body comparts the accommodation chamber into a high pressure chamber to which the pressure in the upstream passage is introduced, and a low pressure chamber to which the pressure in the downstream passage is introduced. The compressor has an oil separator having an oil introduction passage connected to the oil separating chamber and a high pressure introduction passage introducing the pressure in the upstream passage to the high pressure chamber. The oil introduction passage introduces the oil separated from the refrigerant by the oil separator to a pressure zone other than a discharge pressure zone.
    Type: Application
    Filed: October 26, 2007
    Publication date: May 8, 2008
    Inventors: Akinobu Kanai, Hiroyuki Nakaima, Yoshinori Inoue, Atsuhiro Suzuki
  • Publication number: 20080063540
    Abstract: A variable displacement compressor includes a housing assembly. A displacement control structure for the variable displacement compressor includes a passage forming member, a flat partition and a displacement control valve. The passage forming member is connected to an exterior surface of the housing assembly for forming a refrigerant passage for allowing the refrigerant to be discharged out from the compressor to an external refrigerant circuit. The flat partition is interposed between the passage forming member and the housing assembly. A throttle penetrates through the partition, which divides the refrigerant passage into an upstream passage and a downstream passage. The displacement control valve is provided in the passage forming member. The displacement control valve senses pressure of refrigerant in the upstream passage and pressure of the refrigerant in the downstream passage to control flow rate of the refrigerant flowing through a supply passage.
    Type: Application
    Filed: August 20, 2007
    Publication date: March 13, 2008
    Inventors: Yoshinori Inoue, Atsuhiro Suzuki, Hiroyuki Nakaima
  • Publication number: 20080041080
    Abstract: A structure for sensing refrigerant flow rate in a compressor. The structure includes a passage forming member, a restriction hole, a differential pressure-type flow rate sensor, and a partition plate. The compressor includes a housing connected to an external refrigerant circuit via a refrigerant passage. The passage forming member is connected to an outer surface of the housing and forms a part of the refrigerant passage. The restriction hole divides the refrigerant passage into an upstream passage and a downstream passage. The upstream passage is formed in either the housing or the passage forming member. The sensor is provided in the passage forming member and detects pressure in the upstream passage and pressure in the downstream passage to sense flow rate of refrigerant in the refrigerant passage. The partition plate is disposed between the housing and the passage forming member. The restriction hole is formed in the partition plate to extend through the partition plate.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 21, 2008
    Inventors: Yoshinori Inoue, Hirokazu Mesaki, Atsuhiro Suzuki
  • Publication number: 20080036095
    Abstract: A semiconductor device includes a first interlayer insulating film formed above a semiconductor substrate, a first source line formed on the first interlayer insulating film, a second interlayer insulating film formed on the first source line, a plurality of bit lines formed on the second interlayer insulating film so as to extend in a direction, the bit lines being arranged at same width and same width, a third interlayer insulating film formed above the bit lines, a second source line formed on the third interlayer insulating film, and a source shunt line formed between the second and third interlayer insulating films, the source shunt line electrically connecting the first and second source lines to each other, the source shunt line being located between the bit lines so as to extend in the same direction as the bit lines, the source shunt line including a width same as the bit lines.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 14, 2008
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Atsuhiro Suzuki
  • Publication number: 20080013230
    Abstract: An ESD protection circuit for a semiconductor device including a bonding pad receiving a first power supply voltage; an interconnect layer provided in an underside of the bonding pad so as to be electrically conductive with the bonding pad; a semiconductor substrate provided with a first well of a predetermined conductive type in a predetermined region of a surface layer of the substrate, which first well receives a second power supply voltage having a different voltage from the first power supply voltage and provided with a confronting region confronting the underside of the interconnect layer over a dielectric layer, and the first well of the semiconductor substrate, the dielectric layer, the bonding pad and the interconnect layer constitute a capacitor.
    Type: Application
    Filed: July 10, 2007
    Publication date: January 17, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Atsuhiro Suzuki
  • Patent number: 7280404
    Abstract: A nonvolatile semiconductor memory device is characterized by including a memory cell to store data, a first reference cell, a check circuit to check a threshold of the first reference cell, and an erase circuit to erase the data of the memory cell in response to detection by the check circuit that the threshold of the first reference cell is smaller than or substantially equal to a predetermined fixed value.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: October 9, 2007
    Assignee: Fujitsu Limited
    Inventor: Atsuhiro Suzuki
  • Publication number: 20070177987
    Abstract: A displacement detection device for a variable displacement compressor in which a swash plate which is connected to a piston through shoes in a housing slides relative to the shoes and rotates synchronously with a drive shaft with a wobbling motion in an axial direction of the drive shaft as the drive shaft is rotated, and an inclination angle of the swash plate is controlled thereby changing a stroke of the piston, includes a detection object provided in a first portion of an outer periphery of the swash plate where an imaginary plane passing through a point of intersection between a line connecting top and bottom dead center positions of the swash plate and an axial line of the drive shaft in perpendicular relation to the line intersects with the outer periphery of the swash plate and a detector provided in the housing so as to face the detection object.
    Type: Application
    Filed: December 22, 2006
    Publication date: August 2, 2007
    Inventors: Masaki Ota, Masanori Sonobe, Atsuhiro Suzuki, Satoshi Umemura, Tomoji Tarutani
  • Publication number: 20060028871
    Abstract: A nonvolatile semiconductor memory device is characterized by including a memory cell to store data, a first reference cell, a check circuit to check a threshold of the first reference cell, and an erase circuit to erase the data of the memory cell in response to detection by the check circuit that the threshold of the first reference cell is smaller than or substantially equal to a predetermined fixed value.
    Type: Application
    Filed: March 24, 2005
    Publication date: February 9, 2006
    Inventor: Atsuhiro Suzuki
  • Patent number: 6835337
    Abstract: In the filling step, the forward movement speed of the screw is controlled in accordance with a predetermined speed pattern until the screw reaches a deceleration initiation point, LS4B. After the screw reaches LS4B, a deceleration step is started. In the deceleration step, the forward movement speed of the screw is controlled in a feedback manner such that the internal pressure of the mold reaches a predetermined target pressure. When the screw reaches a pressure holding initiation point, LS4 (or pressure holding initiation time, TR2), the pressure holding step is started. In the pressure holding step, the target pressure, which is a function of time, is changed with time in accordance with a program. When the operation goes to the pressure holding step, the set of PID coefficients within the feedback control loop are replaced by different set of PID coefficients.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: December 28, 2004
    Assignee: Munekata Co., Ltd.
    Inventors: Kiyoshi Sasaki, Yasumasa Sugiyama, Hiroshi Katsuta, Hirofumi Tateyama, Kazuyuki Ushizaka, Atsuhiro Suzuki
  • Patent number: 6520749
    Abstract: A control valve is located in a variable displacement compressor, which is used in a refrigerant circuit. The control valve includes a pressure-sensing member. The pressure sensing member moves a valve body in accordance with the pressure difference between a first pressure monitoring point and a second pressure monitoring point, which are located in the refrigerant circuit. A first spring and a second spring urge the pressure-sensing member in one direction. The spring constant of the first spring is smaller than that of the second spring. A solenoid urges the pressure-sensing member by a force, the magnitude of which corresponds to an external command. The solenoid urges the pressure-sensing member in a direction opposite to the direction in which the springs urge the pressure-sensing member. The control valve quickly and accurately controls the displacement of the compressor.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: February 18, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Kazuya Kimura, Satoshi Umemura, Kazuhiko Minami, Tatsuya Hirose, Taku Adaniya, Atsuhiro Suzuki
  • Publication number: 20020163097
    Abstract: In the filling step, the forward movement speed of the screw is controlled in accordance with a predetermined speed pattern until the screw reaches a deceleration initiation point, LS4B. After the screw reaches LS4B, a deceleration step is started. In the deceleration step, the forward movement speed of the screw is controlled in a feedback manner such that the internal pressure of the mold reaches a predetermined target pressure. When the screw reaches a pressure holding initiation point, LS4 (or pressure holding initiation time, TR2), the pressure holding step is started. In the pressure holding step, the target pressure, which is a function of time, is changed with time in accordance with a program. When the operation goes to the pressure holding step, the set of PID coefficients within the feedback control loop are replaced by different set of PID coefficients.
    Type: Application
    Filed: April 29, 2002
    Publication date: November 7, 2002
    Inventors: Kiyoshi Sasaki, Yasumasa Sugiyama, Hiroshi Katsuta, Hirofumi Tateyama, Kazuyuki Ushizaka, Atsuhiro Suzuki