Patents by Inventor Masatoshi Hasegawa

Masatoshi Hasegawa 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: 20110257360
    Abstract: The present invention provides a useful and novel alicyclic polyesterimide. An alicyclic polyesterimide produced by imidation of an alicyclic polyesterimide precursor is found to be a useful material in industrial fields, the alicyclic polyesterimide precursor being obtained by reacting an alicyclic tetracarboxylic anhydride having an ester group or a class of tetracarboxylic acid thereof as a starting material with an amine.
    Type: Application
    Filed: April 28, 2011
    Publication date: October 20, 2011
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Masatoshi HASEGAWA, Haruhiko KUSAKA, Jun ENDA
  • Publication number: 20100147564
    Abstract: Disclosed is a linear polyimide precursor having an intrinsic viscosity of not less than 0.5 dL/g and composed of a repeating unit represented by at least one formula selected from the group consisting of the general formula (1) below and the general formula (2) below. In the general formulae (1) and (2), X represents a divalent aromatic group other than a residue of 1,4-bis(4-aminophenoxy)benzene and a residue of bis(4-amino-3-methylphenyl)methane or an aliphatic group. Since this linear polyimide precursor has high glass transition temperature and high toughness, while exhibiting excellent solubility and thermoplasticity, it is suitably used as a raw material for an asymmetric polyimide which is useful as an adhesive resin for flexible printed circuits (FPC) or the like.
    Type: Application
    Filed: May 8, 2008
    Publication date: June 17, 2010
    Applicant: JFE CHEMICAL CORPORATION
    Inventors: Masatoshi Hasegawa, Naoyuki Kitamura
  • Publication number: 20100145002
    Abstract: The present invention provides a useful and novel alicyclic polyesterimide. An alicyclic polyesterimide produced by imidation of an alicyclic polyesterimide precursor is found to be a useful material in industrial fields, the alicyclic polyesterimide precursor being obtained by reacting an alicyclic tetracarboxylic anhydride having an ester group or a class of tetracarboxylic acid thereof as a starting material with an amine.
    Type: Application
    Filed: June 1, 2006
    Publication date: June 10, 2010
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Masatoshi Hasegawa, Haruhiko Kusaka, Jun Enda
  • Patent number: 7729198
    Abstract: A semiconductor integrated circuit device including a memory circuit with both high access efficiency and high memory efficiency in a simple configuration is provided. In a memory read control circuit, burst length is changed based on whether or not a read instruction is issued at a cycle after a cycle at which a read instruction /R is issued. And, in a memory write control circuit, burst length is changed based on whether or not a write instruction is issued at a cycle before a cycle at which a write instruction /W is issued.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: June 1, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masatoshi Hasegawa, Michiaki Nakayama, Masatoshi Sakamoto
  • Patent number: 7635551
    Abstract: A poly(imide-azomethine)copolymer that has a low linear thermal expansion coefficient and a method for producing the same copolymer are provided. Also provided are a poly(amic acid-azomethine)copolymer that is a precursor polymer of the poly(imide-azomethine)copolymer; a positive photosensitive resin composition composed of the precursor polymer and a photosensitizer; and a method for making a fine pattern of poly(imide-azomethine) copolymer from the resin composition.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: December 22, 2009
    Assignees: Sony Corporation, Sony Chemical & Information Device Corporation
    Inventors: Masatoshi Hasegawa, Junichi Ishii
  • Publication number: 20090306329
    Abstract: Provided are a polyimide that demonstrates low coefficient of hygroscopic expansion and low water absorption coefficient when used as an insulation film, as well as an ester group-containing tetracarboxylic acid dianhydride expressed by the general formula below, and a novel polyesterimide precursor derived therefrom and polyesterimide, for use in the production of such polyimide: In the formula, each R is independent and represents a straight or branched-chain alkyl group with 1 to 6 carbon atoms or straight or branched-chain alkoxyl group with 1 to 6 carbon atoms, n is an integer of 0 to 4, and m is an integer of 2 to 4, with the proviso that if m=2, n is an integer of 1 to 4.
    Type: Application
    Filed: January 28, 2008
    Publication date: December 10, 2009
    Applicant: HONSHU CHEMICAL INDUSTRY CO., LTD.
    Inventor: Masatoshi Hasegawa
  • Publication number: 20090267508
    Abstract: A blue-light-emitting element includes a polyimide containing a repeating unit represented by formula (1): (wherein X represents a divalent alicyclic hydrocarbon group having 6 to 24 carbon atoms). Since the polyimide has a high glass transition temperature and toughness and exhibits a stable luminous efficiency; the blue-light-emitting element is suitable for an organic EL display.
    Type: Application
    Filed: November 22, 2006
    Publication date: October 29, 2009
    Applicant: JFE Chemical Corporation
    Inventors: Masatoshi Hasegawa, Hiroaki Nakao, Toshiyuki Yasuda
  • Patent number: 7521167
    Abstract: Provided are an ester group-containing poly(imide-azomethine)copolymer having low linear thermal expansion coefficient; a production method thereof; an ester group-containing poly(amide acid-azomethine)copolymer to serve as the precursor of the poly(imide-azomethine)copolymer; a positive photosensitive composition including the poly(amide acid-azomethine)copolymer and a photosensitizer; a method for forming a fine pattern of an ester group-containing poly(imide-azomethine)copolymer from the composition; and a method for forming a fine pattern of an ester group-containing poly(imide-azomethine)copolymer by etching a photosensitizer-free, ester group-containing poly(imide-azomethine)copolymer in an alkaline solution.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: April 21, 2009
    Assignees: Sony Corporation, Sony Chemical & Information Device Corporation
    Inventors: Masatoshi Hasegawa, Junichi Ishii
  • Patent number: 7495978
    Abstract: In a bit-line direction, a plurality of memory mats are arranged including a plurality of memory cells respectively coupled to bit lines and word lines, and a sense amplifier array is arranged including a plurality of latch circuits having input/output nodes connected to a half of bit-line pairs separately provided to the memory mats in a region between the memory mats placed in the bit-line direction, thereby making possible to replace with a redundant bit line pair and the corresponding redundant sense amplifier on a basis of each bit-line pair and sense amplifier connected thereto, thereby realizing effective and rational Y-system relief.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: February 24, 2009
    Assignee: Elpida Memory, Inc.
    Inventors: Masatoshi Hasegawa, Kazuhiko Kajigaya
  • Patent number: 7462604
    Abstract: A hair growth promotor which is an ethanol or aqueous ethanol preparation comprising, as active ingredients for a hair growth promotor, (A) at least one compound selected from fatty acids having a chain length of an odd number of carbon atoms, the derivatives of the fatty acids, aliphatic alcohols having a chain length of an odd number of carbon atoms and the derivatives of the aliphatic alcohols and (B) at least one selected from 6-benzylaminopurine and/or the derivatives thereof represented by the following Formula (I), wherein it further comprises (C) at least one of polyglycerin fatty acid esters and (D) at least one of sorbitan fatty acid esters: in Formula (I), R1 and R2 are defined. The hair growth promotor can have an excellent hair growth effect and can provide an excellent stabilization effect at low temperature and can provide good feeling having no stickiness.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: December 9, 2008
    Assignees: Lion Corporation, Sansho Seiyaku Co., Ltd.
    Inventors: Sumi Kaneda, Nobuyasu Satou, Masatoshi Hasegawa, Masahiro Motono
  • Patent number: 7440350
    Abstract: A DRAM whose operation is sped up and power consumption is reduced is provided. A pair of precharge MOSFETs for supplying a precharge voltage to a pair of input/output nodes of a CMOS sense amplifier is provided; the pair of input/output nodes are connected to a complementary bit-line pair via a selection switch MOSFET; a first equalize MOSFET is provided between the complementary bit-line pair for equalizing them; a memory cell is provided between one of the complementary bit-line pair and a word line intersecting with it; gate insulators of the selection switch MOSFETs and first equalize MOSFET are formed by first film thickness; a gate insulator of the precharge MOSFET is formed by second film thickness thinner than the first film thickness; a precharge signal corresponding to a power supply voltage is supplied to the precharge MOSFET; and an equalize signal and a selection signal corresponding to a boost voltage are supplied to the first equalize MOSFET and the selection switch MOSFET, respectively.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: October 21, 2008
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Tadahiro Obara, Masatoshi Hasegawa, Yousuke Tanaka, Tomofumi Hokari, Kenichi Tajima
  • Publication number: 20080175091
    Abstract: A semiconductor integrated circuit device including a memory circuit with both high access efficiency and high memory efficiency in a simple configuration is provided. In a memory read control circuit, burst length is changed based on whether or not a read instruction is issued at a cycle after a cycle at which a read instruction /R is issued. And, in a memory write control circuit, burst length is changed based on whether or not a write instruction is issued at a cycle before a cycle at which a write instruction /W is issued.
    Type: Application
    Filed: October 29, 2007
    Publication date: July 24, 2008
    Inventors: Masatoshi Hasegawa, Michiaki Nakayama, Masatoshi Sakamoto
  • Patent number: 7403408
    Abstract: A semiconductor memory device that satisfies needs of both a large number of memory banks and a higher operation speed is provided. A semiconductor memory device includes a plurality of data terminal pads, and a plurality of memory banks independently subject to memory access. Each of the memory banks is divided into a plurality of submemory banks. The data terminal pads are also divided into a plurality of groups so as to be associated with submemory banks obtained by the division. Blocks each including submemory banks obtained by the division and data terminal pads associated with the submemory banks are arranged so as not to overlap each other on a semiconductor chip.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: July 22, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Otori, Masatoshi Hasegawa, Mitsugu Kusunoki, Masatoshi Sakamoto
  • Publication number: 20080002488
    Abstract: In a bit-line direction, a plurality of memory mats are arranged including a plurality of memory cells respectively coupled to bit lines and word lines, and a sense amplifier array is arranged including a plurality of latch circuits having input/output nodes connected to a half of bit-line pairs separately provided to the memory mats in a region between the memory mats placed in the bit-line direction, thereby making possible to replace with a redundant bit line pair and the corresponding redundant sense amplifier on a basis of each bit-line pair and sense amplifier connected thereto, thereby realizing effective and rational Y-system relief.
    Type: Application
    Filed: August 24, 2007
    Publication date: January 3, 2008
    Inventors: Masatoshi HASEGAWA, Kazuhiko Kajigaya
  • Publication number: 20070254245
    Abstract: A poly(imide-azomethine)copolymer that has a low linear thermal expansion coefficient and a method for producing the same copolymer are provided. Also provided are a poly(amic acid-azomethine)copolymer that is a precursor polymer of the poly(imide-azomethine)copolymer; a positive photosensitive resin composition composed of the precursor polymer and a photosensitizer; and a method for making a fine pattern of poly(imide-azomethine)copolymer from the resin composition. The poly(imide-azomethine)copolymer is composed of azomethine polymer units of the following formula (1) and imide polymer units of the following general formula (2), and the poly(amic acid-azomethine)copolymer, the major component of the positive photosensitive resin composition, is composed of azomethine polymer units of the following formula (1) and amic acid polymer units of the following formula (3).
    Type: Application
    Filed: July 27, 2005
    Publication date: November 1, 2007
    Applicant: Sony Chemical & information Devices Corporation
    Inventors: Masatoshi Hasegawa, Junichi Ishii
  • Patent number: 7269087
    Abstract: In a bit-line direction, a plurality of memory mats are arranged including a plurality of memory cells respectively coupled to bit lines and word lines, and a sense amplifier array is arranged including a plurality of latch circuits having input/output nodes connected to a half of bit-line pairs separately provided to the memory mats in a region between the memory mats placed in the bit-line direction, thereby making possible to replace with a redundant bit line pair and the corresponding redundant sense amplifier on a basis of each bit-line pair and sense amplifier connected thereto, thereby realizing effective and rational Y-system relief.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: September 11, 2007
    Assignee: Elpida Memory, Inc.
    Inventors: Masatoshi Hasegawa, Kazuhiko Kajigaya
  • Patent number: 7251149
    Abstract: A Y selection line for write for controlling operations of a column selection switch within a write amplifier and a Y selection line for read for controlling operations of a column selection switch within a read amplifier are provided individually and the column selection switch within the read amplifier is set to the non-operating condition during the write operation. Accordingly, a through-current during the write operation may be reduced. In this case, the write IO line and read IO line are allocated crossing sense amplifier columns, while the column selection line for write and column selection line for read are allocated in parallel to the sense amplifier columns.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: July 31, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Masatoshi Sakamoto, Masatoshi Hasegawa
  • Publication number: 20070159901
    Abstract: A DRAM whose operation is sped up and power consumption is reduced is provided. A pair of precharge MOSFETs for supplying a precharge voltage to a pair of input/output nodes of a CMOS sense amplifier is provided; the pair of input/output nodes are connected to a complementary bit-line pair via a selection switch MOSFET; a first equalize MOSFET is provided between the complementary bit-line pair for equalizing them; a memory cell is provided between one of the complementary bit-line pair and a word line intersecting with it; gate insulators of the selection switch MOSFETs and first equalize MOSFET are formed by first film thickness; a gate insulator of the precharge MOSFET is formed by second film thickness thinner than the first film thickness; a precharge signal corresponding to a power supply voltage is supplied to the precharge MOSFET; and an equalize signal and a selection signal corresponding to a boost voltage are supplied to the first equalize MOSFET and the selection switch MOSFET, respectively.
    Type: Application
    Filed: February 21, 2007
    Publication date: July 12, 2007
    Inventors: Tadahiro Obara, Masatoshi Hasegawa, Yousuke Tanaka, Tomofumi Hokari, Kenichi Tajima
  • Publication number: 20070116657
    Abstract: A hair growth promotor which is an ethanol or aqueous ethanol preparation comprising, as active ingredients for a hair growth promotor, (A) at least one compound selected from fatty acids having a chain length of an odd number of carbon atoms, the derivatives of the fatty acids, aliphatic alcohols having a chain length of an odd number of carbon atoms and the derivatives of the aliphatic alcohols and (B) at least one selected from 6-benzylaminopurine and/or the derivatives thereof represented by the following Formula (I), wherein it further comprises (C) at least one of polyglycerin fatty acid esters and (D) at least one of sorbitan fatty acid esters: in Formula (I), R1 and R2 are defined. The hair growth promotor can have an excellent hair growth effect and can provide an excellent stabilization effect at low temperature and can provide good feeling having no stickiness.
    Type: Application
    Filed: September 29, 2004
    Publication date: May 24, 2007
    Applicants: Lion Corporation, Sansho Seiyaku Co., Ltd.
    Inventors: Sumi Kaneda, Nobuyasu Satou, Masatoshi Hasegawa, Masahiro Motono
  • Patent number: 7193912
    Abstract: A DRAM whose operation is sped up and power consumption is reduced is provided. A pair of precharge MOSFETs for supplying a precharge voltage to a pair of input/output nodes of a CMOS sense amplifier is provided; the pair of input/output nodes are connected to a complementary bit-line pair via a selection switch MOSFET; a first equalize MOSFET is provided between the complementary bit-line pair for equalizing them; a memory cell is provided between one of the complementary bit-line pair and a word line intersecting with it; gate insulators of the selection switch MOSFETs and first equalize MOSFET are formed by first film thickness; a gate insulator of the precharge MOSFET is formed by second film thickness thinner than the first film thickness; a precharge signal corresponding to a power supply voltage is supplied to the precharge MOSFET; and an equalize signal and a selection signal corresponding to a boost voltage are supplied to the first equalize MOSFET and the selection switch MOSFET, respectively.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: March 20, 2007
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Tadahiro Obara, Masatoshi Hasegawa, Yousuke Tanaka, Tomofumi Hokari, Kenichi Tajima