Patents by Inventor Satoshi Okamoto

Satoshi Okamoto 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: 8323808
    Abstract: There is provided a perpendicular magnetic recording medium according to which both the thermal stability of the magnetization is good and writing with a magnetic head is easy, and moreover the SNR is improved. In the case of a perpendicular magnetic recording medium comprising a nonmagnetic substrate 1, and at least a nonmagnetic underlayer 2, a magnetic recording layer 3 and a protective layer 4 formed in this order on the nonmagnetic substrate 1, the magnetic recording layer 3 comprises a low Ku region 31 layer having a perpendicular magnetic anisotropy constant (Ku value) of not more than 1×105 erg/cm3, and a high Ku region 32 layer having a Ku value of at least 1×106 erg/cm3. Moreover, the magnetic recording layer 3 is made to have therein nonmagnetic grain boundaries that contain a nonmagnetic oxide and magnetically isolate crystal grains, which are made of a ferromagnetic metal, from one another.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: December 4, 2012
    Assignees: Fuji Electric Co., Ltd., National University Corporation Tohoku University
    Inventors: Osamu Kitakami, Yutaka Shimada, Satoshi Okamoto, Takehito Shimatsu, Hajime Aoi, Hiroaki Muraoka, Yoshihisa Nakamura, Hiroyuki Uwazumi, Tadaaki Oikawa
  • Patent number: 8310589
    Abstract: Disclosed is a digital still camera in which amount of exposure is decided appropriately even when there is a changeover from one shooting scene to another. When a shooting mode is set, a first shooting scene discrimination is performed before a shutter-release button is half-pushed. A first amount of exposure is calculated using a program diagram suited to the shooting scene that has been discriminated by the first shooting scene discrimination. Shooting for focusing control is performed at an exposure corresponding to the first amount of exposure, whereby image data is obtained. Focusing control is carried out based upon the image data obtained, and shooting is performed again. Second shooting scene discrimination is performed based upon the image data obtained by shooting. A second amount of exposure is calculated using a program diagram suited to the shooting scene that has been discriminated by the second shooting scene discrimination.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: November 13, 2012
    Assignee: Fujifilm Corporation
    Inventor: Satoshi Okamoto
  • Publication number: 20120279652
    Abstract: Improved moisture absorption solder heat resistance is obtained in producing a metallic foil laminate body having a metal foil attached on both sides of a laminated base material including a plurality of insulating base materials. A laminated base material (2) is first prepared by pressurizing and integrating a plurality of insulating base materials (2a) in a prepressing step. Then, the laminated base material (2) is heat-treated. Thereafter, this laminated base material (2) is sandwiched between a pair of metal foils (3A) and (3B), and heated and pressurized to be integrated into a metallic foil laminate body. The prepressing step makes it possible to prevent an interface between the insulating base materials (2a) from being generated. As a result, swelling is not generated on the surfaces of the insulating base materials (2a).
    Type: Application
    Filed: November 15, 2010
    Publication date: November 8, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Shohei Azami, Satoshi Okamoto, Hironobu Iyama
  • Publication number: 20120277398
    Abstract: The invention relates to an insulating film for an electromagnetic coil which is composed of a liquid crystal polyester, in which the liquid crystal polyester has a structural unit represented by the following formula (1), a structural unit represented by the following formula (2), and a structural unit represented by the following formula (3), and the amount of the structural units including a 2,6-naphthalenediyl group is 40 mol % or more with respect to the total amount of all the structural units.
    Type: Application
    Filed: December 6, 2010
    Publication date: November 1, 2012
    Inventors: Tomoya Hosoda, Satoshi Okamoto
  • Publication number: 20120263882
    Abstract: A resin-impregnated base substrate is provided by immersing a sheet in an aromatic liquid crystal polyester solution composition so that the polyester is impregnated into the sheet, and removing the solvent. The composition comprises 20 to 50 parts by weight of an aromatic liquid crystal polyester and 100 parts by weight of an aprotic solvent having no halogen atom, wherein the sheet comprises fiber selected from the group consisting of polyolefin resin fiber, fluorocarbon resin fiber, aramid resin fiber, glass fiber, ceramic fiber and carbon fiber.
    Type: Application
    Filed: June 25, 2012
    Publication date: October 18, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Satoshi Okamoto, Shiro Katagiri, Jongchul Seo
  • Publication number: 20120244306
    Abstract: A heat-resistant label containing a liquid crystalline polyester base material, wherein the liquid crystalline polyester in this liquid crystalline polyester base material contains a structural unit represented by the following formula (1), a structural unit represented by the following formula (2) and a structural unit represented by the following formula (3), and wherein the amount of structural units containing a 2,6 naphthalenediyl group is at least 40 mol % based on the total amount of all the structural units: (1) —O—Ar1—CO— (2) —CO—Ar2—CO— and (3) —O—Ar3—O— (wherein, Ar1 represents a 2,6-naphthalenediyl group, a 1,4-phenylene group, or a 4,4?-biphenylylene group; each of Ar2 and Ar3 independently represents a 2,6-naphthalenediyl group, a 1,4-phenylene group, a 1-3-phenylene group, or a 4,4?-biphenylylene group; and hydrogen atoms which are in the group represented by Ar1, Ar2 or Ar3 may be each independently substituted with a halogen atom, an alkyl group having 1 to 10 carbon atoms, or an aryl gro
    Type: Application
    Filed: December 6, 2010
    Publication date: September 27, 2012
    Inventors: Tomoya Hosoda, Satoshi Okamoto
  • Patent number: 8268224
    Abstract: The present invention provides a method for producing a polyethersulfone fiber, the method comprising the steps of discharging an electrically charged solution comprising a polyethersulfone and a solvent from a container; and drawing the charged solution by electrical attraction in an electrical field generated between the solution and an electrically charged collecting means having the opposite charge of the solution, while evaporating at least a portion of the solvent to form a polyethersulfone fiber. The fiber obtained in the present invention has a small average fiber diameter and can be made into a thin fiber cloth.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: September 18, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yusaku Kohinata, Satoshi Okamoto
  • Publication number: 20120216859
    Abstract: An object of the present invention is to provide a back sheet for a solar cell that improves weather resistance while also being advantageous in terms of cost. In a back sheet 7 for a solar cell of a preferred embodiment, a liquid crystal polyester that composes a liquid crystal polyester base material is formed of structural units represented by the following formulas (1), (2) and (3).
    Type: Application
    Filed: August 10, 2010
    Publication date: August 30, 2012
    Inventors: Satoshi Okamoto, Tomoya Hosoda
  • Patent number: 8253213
    Abstract: A photoelectric conversion element of the present invention comprises: a first semiconductor layer of a first conductivity type; a first electrode arranged on the back side of the first semiconductor layer a second semiconductor layer of a second conductivity type, the second semiconductor layer on the light-receiving side of the first semiconductor layer; a light-receiving face-side electrode provided on the light-receiving side of the second semiconductor layer; a second electrode arranged on the back side of the first semiconductor layer, and electrically separated from the first semiconductor layer, but connected to the second semiconductor layer; and a penetrating-connecting section penetrating the first semiconductor layer, and connecting the light-receiving face-side electrode with the second electrode, wherein the photoelectric conversion element is characterized in that the first electrode and the second electrode are arranged equidistantly apart from a central axis passing through a center of the ph
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: August 28, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akiko Tsunemi, Satoshi Okamoto
  • Publication number: 20120193131
    Abstract: The metal base circuit board according to the present invention includes a metal substrate, an insulating layer provided on the metal substrate, and a conductive foil for circuit formation that is provided on the insulating layer. The metal substrate has a thermal conductivity of 60 W/mK or more and a thickness of 0.2 to 5.0 mm. The insulating layer is formed using an insulating material composition in which an inorganic filler having a thermal conductivity of 30 W/mK or more is dispersed in a non-anisotropic liquid crystal polyester solution. According to the present invention, a metal base circuit board can be provided that can be applied in an inverter and applications requiring high heat dissipation properties, and that has high thermal conductivity, as well as having high thermal stability and electrical reliability.
    Type: Application
    Filed: April 7, 2010
    Publication date: August 2, 2012
    Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, NHK SPRING CO., LTD.
    Inventors: Kouichi Kusakawa, Kazuhiko Konomi, Satoshi Okamoto, Toyonari Ito
  • Publication number: 20120161357
    Abstract: An object of the present invention is to produce a liquid crystal polyester film having excellent thermal conductivity in a thickness direction. Provided is a liquid crystal polyester film, which comprises casting a liquid composition containing a liquid crystal polyester and a solvent; removing the solvent; raising a temperature from 150° C. or lower to a temperature between a liquid crystal transition temperature and 80° C. above the liquid crystal transition temperature of the liquid crystal polyester at a rate of 1.0° C./minute or more; and heat-treating the obtained film at a temperature between the liquid crystal transition temperature and 80° C. above the liquid crystal transition temperature of the liquid crystal polyester. It is preferred to use, as the liquid crystal polyester, those having a liquid crystal transition temperature of 320° C. or lower.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Ryo MIYAKOSHI, Takeshi KONDO, Satoshi OKAMOTO
  • Publication number: 20120152823
    Abstract: The present invention relates to a porous membrane which contains aromatic polysulfone resin that has a reduced viscosity of 0.56-0.78 dL/g, and a hydrophilic polymer.
    Type: Application
    Filed: September 14, 2010
    Publication date: June 21, 2012
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Satoshi Okamoto, Yusaku Kohinata
  • Publication number: 20120132362
    Abstract: A resin-impregnated sheet obtained by impregnating a fiber sheet with a thermoplastic resin, wherein a weight loss rate upon a heat treatment at 225° C. for 30 minutes is from 6.8 to 10% by mass; and a method for producing a resin-impregnated sheet laminate with a metal foil, which comprises preliminarily pressing a plurality of the resin-impregnated sheets while being laid one upon another, subjecting the obtained resin-impregnated sheet laminate to a heat treatment, and arranging a metal foil on both sides of the sheet laminate, followed by regular pressing.
    Type: Application
    Filed: October 25, 2011
    Publication date: May 31, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Shohei AZAMI, Satoshi OKAMOTO, Hironobu IYAMA
  • Publication number: 20120133015
    Abstract: A photoelectric conversion element of the present invention comprises: a first semiconductor layer of a first conductivity type; a first electrode arranged on the back side of the first semiconductor layer a second semiconductor layer of a second conductivity type, the second semiconductor layer on the light-receiving side of the first semiconductor layer; a light-receiving face-side electrode provided on the light-receiving side of the second semiconductor layer; a second electrode arranged on the back side of the first semiconductor layer, and electrically separated from the first semiconductor layer, but connected to the second semiconductor layer; and a penetrating-connecting section penetrating the first semiconductor layer, and connecting the light-receiving face-side electrode with the second electrode, wherein the photoelectric conversion element is characterized in that the first electrode and the second electrode are arranged equidistantly apart from a central axis passing through a center of the ph
    Type: Application
    Filed: December 7, 2011
    Publication date: May 31, 2012
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Akiko TSUNEMI, Satoshi OKAMOTO
  • Patent number: 8178646
    Abstract: The present invention provides a method for producing a liquid-crystalline polyester powder, the method comprising: carrying out melt polycondensation of monomers and/or its acylated monomers to obtain a corresponding polyester having a flow initiation temperature of 240 to 300° C.; spreading and solidifying the polyester so as to be a layer thereof with a thickness of 1 cm or more: crushing the solidified substance to obtain a powder having a volume average particle diameter of 3 to 30 ?m; and subjecting the powder to a heat treatment to obtain a powder having a flow initiation temperature higher than the flow initiation temperature of the liquid-crystalline polyester after the melt polycondensation.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: May 15, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yusaku Kohinata, Tomoya Hosoda, Satoshi Okamoto
  • Patent number: 8093675
    Abstract: To provide a photoelectric conversion element that allows connection between adjacent photoelectric conversion elements by use of an inexpensive wiring member.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: January 10, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akiko Tsunemi, Satoshi Okamoto
  • Patent number: 8076012
    Abstract: Disclosed are a magnetic thin film capable of providing a high uniaxial magnetic anisotropy, Ku, while suppressing the saturation magnetization Ms thereof, and a method for forming the film; and also disclosed are various devices to which the magnetic thin film is applied. The magnetic thin film comprises a Co-M-Pt alloy having an L11-type ordered structure (wherein M represents one or more metal elements except Co and Pt). For example, the Co-M-Pt alloy is a Co—Ni—Pt alloy of which the composition comprises from 10 to 35 at. % of Co, from 20 to 55 at. % of Ni and a balance of Pt. The magnetic thin film is applicable to perpendicular magnetic recording media, tunnel magneto-resistance (TMR) devices, magnetoresistive random access memories (MRAM), microelectromechanical system (MEMS) devices, etc.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: December 13, 2011
    Assignees: Tohoku University, Fuji Electric Co., Ltd.
    Inventors: Takehito Shimatsu, Hideo Sato, Osamu Kitakami, Satoshi Okamoto, Hajime Aoi, Hiroyasu Kataoka
  • Patent number: 8071711
    Abstract: The present invention provides a liquid-crystalline polyester having a structural unit represented by the formula (i), a structural unit represented by the formula (ii) and a structural unit represented by the formula (iii): wherein Ar1 is, at each occurrence, a member selected from the group consisting of a 2,6-naphthalenediyl group, a 1,4-phenylene group and a 4,4?-biphenylene group; and Ar2 and Ar3 are, at each occurrence, a member selected from the group consisting of a 2,6-naphthalenediyl group, a 1,4-phenylene group, a 1,3-phenylene group and a 4,4?-biphenylene group; wherein 40% by mole or more of all the groups Ar1, Ar2 and Ar3 are 2,6-naphthalenediyl groups; and wherein the polyester has a flow initiation temperature of from about 280 to about 320° C.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: December 6, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomoya Hosoda, Yusaku Kohinata, Satoshi Okamoto
  • Patent number: 8071221
    Abstract: An organic resin composition with a low coefficient of thermal expansion comprising (a) an organic resin and (b) an inorganic silicate containing alkali metals and alkaline earth metals in a total amount of 1,000 ppm or less.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: December 6, 2011
    Assignees: Sumitomo Chemical Company, Limited, Dongwoo Fine-Chem Co., Ltd.
    Inventors: Satoshi Okamoto, Min-soo Yang, Dong-pil Park
  • Patent number: 8037269
    Abstract: Versatility of a memory card is improved by providing a memory card where data protection mode and normal mode can be selected at discretion. A portable auxiliary storage device includes a mode setting section, a mode detecting section and a memory access control section. The mode setting section allows a user to set a normal mode permitting reading data stored in a memory section or writing the data to the memory section without restriction and a data protection mode for restricting the reading or writing. The mode detecting section detects a mode set in the mode setting section. The memory access control section controls the read or write according to a state of the mode setting section detected by the mode detecting section.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: October 11, 2011
    Assignee: Panasonic Corporation
    Inventors: Satoshi Okamoto, Taiho Nakazawa, Sadatoshi Chozui, Koichi Morioka