Patents by Inventor Hiroshi Nakao

Hiroshi Nakao 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: 20030096828
    Abstract: The invention relates to compounds represented by the following general formula (1): 1
    Type: Application
    Filed: June 19, 2002
    Publication date: May 22, 2003
    Applicant: KOWA CO., LTD.
    Inventors: Hiroyuki Ishiwata, Seiichi Sato, Mototsugu Kabeya, Soichi Oda, Yukio Hattori, Makoto Suda, Manabu Shibasaki, Hiroshi Nakao, Takao Nagoya
  • Patent number: 6515089
    Abstract: Provided are a method, upon radical copolymerization of a vinyl-containing porphyrin compound and a radically polymerizable monomer, thereby obtaining a porphyrin-nucleus introduced polymer, of controlling reactivity of the porphyrin-nucleus introduced polymer with a metal by selecting the radically polymerizable monomer; and a method for measuring a trace metal by measuring a change in absorbance caused by a complex forming reaction between a porphyrin-nucleus introduced polymer, which has been obtained by radical copolymerization of a vinyl-containing porphyrin compound and a radically polymerizable monomer, and a heavy metal ion, the radically polymerizable monomer being selected so as to heighten reaction selectivity of the porphyrin-nucleus introduced polymer to a metal to be measured.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: February 4, 2003
    Assignee: Kowa Co., Ltd.
    Inventors: Takaharu Asano, Hiroshi Nakao
  • Patent number: 6509621
    Abstract: A magnetic random access memory includes a ferromagnetic pinned layer having a spin polarization of 0.9 or more in a TMR sensor constituting a memory cell. Further, the construction for reducing a write current by applying an offset magnetic field to the memory cell, is also disclosed.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: January 21, 2003
    Assignee: Fujitsu Limited
    Inventor: Hiroshi Nakao
  • Patent number: 6448242
    Abstract: The invention relates to compounds represented by the following general formula (1): wherein A is an aromatic compound which may be substituted, or the like, B is a nitrogen atom or CH, X is a lower alkylene group which may be substituted, or the like, Y is a single bond or the like; Z is a divalent residue of benzene which may be substituted, or the like, and m and n are independently an integer of 1 to 4, and medicines comprising such a compound. These compounds have an excellent inhibitory effect on the production of an IgE antibody and are hence useful as antiallergic agents and the like.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: September 10, 2002
    Assignee: Kowa Co., Ltd.
    Inventors: Hiroyuki Ishiwata, Seiichi Sato, Mototsugu Kabeya, Soichi Oda, Yukio Hattori, Makoto Suda, Manabu Shibasaki, Hiroshi Nakao, Takao Nagoya
  • Patent number: 6437067
    Abstract: Provided are porphyrin-nucleus introduced polymers obtained by radical copolymerization of a radically polymerizable monomer with a porphyrin compound represented by formula (1) or (2): where R represents a hydrogen atom or a C1-6 alkyl group. Also provided are a trace metal measuring reagent and a trace metal removing agent, each containing the porphyrin-nucleus introduced polymer. The porphyrin-nucleus introduced polymer can be obtained as a compound having desired properties or reactivity by making use of easily available porphyrin compounds. The polymer is useful as a reagent for measuring or an agent for removing heavy metals.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 20, 2002
    Assignee: Kowa Co., Ltd.
    Inventors: Takaharu Asano, Hiroshi Nakao
  • Publication number: 20020042414
    Abstract: The present invention relates to diamide derivatives represented by the following general formula (1): 1
    Type: Application
    Filed: October 17, 2001
    Publication date: April 11, 2002
    Applicant: KOWA CO., LTD.
    Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Hiromichi Shigyo, Masami Shiratsuchi, Yukio Hattori, Hiroshi Nakao, Takao Nagoya, Seiichi Sato, Soichi Oda, Makoto Suda, Manabu Shibasaki
  • Patent number: 6351410
    Abstract: A ferromagnetic tunnel junction random access memory includes a ferromagnetic tunnel junction structure including a first ferromagnetic layer, a second ferromagnetic layer disposed adjacent to the first ferromagnetic layer and having a fixed magnetization, and a tunnel insulator layer interposed between the first and second ferromagnetic layers; a conductor plug penetrating the first ferromagnetic layer, the tunnel insulator layer and the second ferromagnetic layer along a center axis; a first selection line coupled to a first end of the conductor plug; and a second selection line coupled to a second end of the conductor plug opposite to the first end. The first ferromagnetic layer has a generally ring shape surrounding the conductor plug and is insulated from the conductor plug. One of the first and second ferromagnetic layers has an antiferromagnetic layer pattern on a portion thereof.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: February 26, 2002
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Nakao, Yoshimi Yamashita, Naoto Horiguchi
  • Patent number: 6340682
    Abstract: The present invention provides diamide derivatives represented by the following general formula (1): wherein A is a phenyl group or the like, which may be substituted, B is —CH═CH—, —C═C—, —(CH═CH)2—, —C≡C—CH═CH—, —CH═CH—C≡C—, phenylene or the like, and W is or and medicines comprising such a compound. These compounds have an excellent inhibitory effect on the production of an IgE antibody and are hence useful as antiallergic agents and the like.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: January 22, 2002
    Assignee: Kowa Co., Ltd.
    Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Hiromichi Shigyo, Masami Shiratsuchi, Yukio Hattori, Hiroshi Nakao, Takao Nagoya, Seiichi Sato, Soichi Oda, Makoto Suda, Manabu Shibasaki
  • Publication number: 20010039279
    Abstract: The present invention relates to compounds represented by the following general formula (1): 1
    Type: Application
    Filed: May 17, 2001
    Publication date: November 8, 2001
    Applicant: KOWA CO., LTD.
    Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Masami Shiratsuchi, Yukio Hattori, Hiroshi Nakao, Takao Nagoya, Seiichi Sato, Soichi Oda, Makoto Suda, Manabu Shibasaki
  • Patent number: 6301743
    Abstract: A vacuum cleaner including a suction fan and a suction fan drive motor also includes a power control circuit with a controller, and a reset toggle. First and second capacitors are positioned with one on each side of the reset toggle. A zener diode is also provided. Together, the capacitors and zener diode function to reduce the susceptibility of the power control circuit to undesired reset in response to relatively small and otherwise insignificant power supply and static discharge spikes.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: October 16, 2001
    Assignee: Matsushita Electric Corporation of America
    Inventors: John A. Cloud, III, Hiroshi Nakao
  • Publication number: 20010025978
    Abstract: A magnetic random access memory includes a ferromagnetic pinned layer having a spin polarization of 0.9 or more in a TMR sensor constituting a memory cell. Further, the construction for reducing a write current by applying an offset magnetic field to the memory cell, is also disclosed.
    Type: Application
    Filed: December 28, 2000
    Publication date: October 4, 2001
    Applicant: Fujitsu Limited,
    Inventor: Hiroshi Nakao
  • Patent number: 6297283
    Abstract: The present invention relates to compounds represented by the following general formula (1): wherein A is a phenyl, naphthyl, dihydronaphthyl, indenyl, pyridyl, indolyl, isoindolyl, quinolyl or isoquinolyl group which may be substituted; X is a lower alkylene group which may be substituted, or the like; Y is a single bond or an alkylene group; Z is a group of —CH═CH—, —C≡C—, —(CH═CH)2—, —C≡C—CH═CH— or —CH═CH—C≡C—, or the like; and R is a hydrogen atom, a lower alkyl group or the like, and medicines comprising such a compound. These compounds have an excellent inhibitory effect on the production of an IgE antibody and are hence useful as antiallergic agents and the like.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: October 2, 2001
    Assignee: Kowa Co., Ltd.
    Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Masami Shiratsuchi, Yukio Hattori, Hiroshi Nakao, Takao Nagoya, Seiichi Sato, Soichi Oda, Makoto Suda, Manabu Shibasaki
  • Patent number: 6197273
    Abstract: The invention provides a process for production of fine spherical particles of a carbonate or a hydroxide of nickel, cobalt or copper which comprises: dissolving a carbonate or a hydroxide of nickel, cobalt or copper having the general formula (I) M(CO3)x/2.(OH)y wherein M represents Ni, Co or Cu, and x and y are numerals satisfying the followings: 0≦x≦2, 0≦y≦2 and x+y=2, in aqueous ammonia, converting the resulting solution to a W/O emulsion containing droplets of the solution in a non-aqueous medium, and then removing volatile components including ammonia from within the droplets, thereby precipitating a basic carbonate or a hydroxide of a metal selected from nickel, cobalt and copperin the droplets.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: March 6, 2001
    Assignee: Sakai Chemical Industry Co., Ltd.
    Inventors: Kazuhiko Nagano, Kazunobu Abe, Shigefumi Kamisaka, Kiyoshi Fukai, Tsutomu Hatanaka, Shinji Ohgama, Hiroshi Nakao, Minoru Yoneda, Hideto Mizutani
  • Patent number: 6075066
    Abstract: The present invention provides semi-spherical materials to be worn on the eyeball, such as contact lenses for visual acuity correction or medical treatment use, cornea protecting materials, controlled drug release contact lenses and the like, which comprise, as a main component, a glycosaminoglycan existing in the living body as an extracellular matrix component of connective tissues and satisfy various requirements such as dimentional stability, transparency, surface water wettability, tissue compatibility, oxygen permeability and the like. In other words, the material to be worn on the eyeball has a shape of semi-spherical surface compatible in shape with the mammalian eyeball and has biological and surface-physical compatibilities with ophthalmic tissues and comprises, as a main component, a substantially transparent photocured crosslinked-glycosaminoglycan obtained by allowing photoreactive groups covalently bonded to a glycosaminoglycan to crosslink mutually by photoirradiation.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: June 13, 2000
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: Takehisa Matsuda, Hiroshi Nakao
  • Patent number: 6054349
    Abstract: A single-electron device includes a substrate, an insulating film provided on the substrate, a plurality of nanometer-size conductive particles formed in the insulating film along an interface between the substrate and the insulating film, and an electrode provided on the insulating film, wherein the conductive particles have a generally identical size and arranged substantially in a plane at a depth closer to the substrate.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: April 25, 2000
    Assignee: Fujitsu Limited
    Inventors: Anri Nakajima, Naoto Horiguchi, Hiroshi Nakao
  • Patent number: 5921687
    Abstract: A printing apparatus employs a nearly linear conveying path P2 for printing paper P from a position confronting the platen roller 6 and thermal head 7 for composing the printing unit 3 to the paper discharge unit 2. The capstan roller 4, pinch roller 5, and discharge rollers 10, 10 are disposed opposedly to the conveying path P2, and at an intermediate position of the conveying path P2 intersects the conveying path P1 from the paper supply unit 1 to the printing unit 3. A paper supply port is disposed at the bottom of the paper cassette forming the paper supply unit 1, so that the conveying path P1 from the paper supply port to the printing unit 3 is shortened, and accordingly the paper conveying path is shortened. The printer construction simplified and downsized, while the precision of positioning of the printing paper and positioning of the printing head is enhanced, so that the printing quality may be improved.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: July 13, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kiyoshi Koike, Hiroshi Nakao
  • Patent number: 5873665
    Abstract: A printer for printing characters and images on recording paper comprising: a paper cassette for storing the recording paper; a platen roller around which the recorrding paper is wound at the time of the transfer of images for printing; a clamping mechanism for clamping the recording paper between the clamping mechanism and the platen roller; a motor for driving the platen roller through a gear unit; a thermal printing head for transferring images onto the recording paper; paper feeding rollers for feeding the recording paper from the paper cassette to the clamper; paper discharging rollers for discharging the recording paper upon the completion of the transfer of images thereto; and an ink cassette storing an ink sheet inside thereof; in which the clamping mechanism comprises a clamper which is mounted on the platen roller in such a manner as to permit the free movement of the clamper, holds the recording paper by pushing the recording paper onto the platen roller in a first position and also releases the re
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: February 23, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Jyun-ichi Aizawa, Kunihiko Nakagawa, Hiroshi Nakao, Hitoshi Ezaki, Kouhei Sunaga
  • Patent number: 5796406
    Abstract: An information processing apparatus obtains a distance that an input pen is moved in terms of the number of dots covered on a display screen, and from that number, judges whether a pen stroke is a gesture entry or a pointing entry. When the input pen is moved over more than a predetermined number of dots, e.g., eight dots, gesture recognition processing is performed. If the input pen is moved less than that number of dots, a pointing instruction is recognized, and pointing processing is performed. If a gesture is recognized, a recognized gesture editing command and a feature point of the gesture command are stored in RAM. Since an input by the input pen is judged a gesture entry or a pointing entry according to the number of dots over which the input pen is moved, a switch is not required to change data/instruction entry modes which reduces cost and improves handling.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: August 18, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Shigematsu, Yutaka Nakamura, Munenori Sakamoto, Hiroyuki Nagasawa, Hiroshi Nakao, Yasuhiro Nakajima, Masaaki Kurata
  • Patent number: 5723465
    Abstract: The present invention is directed to a cell adhesion inhibitory agent, cellular infiltration inhibitory agent, antiallergic agent, antiasthmatic agent, and antiphlogistic, which contains a compound of the following formula (1): ##STR1## wherein each of R.sup.1 through R.sup.6 represents H, a halogen atom, a hydroxyl group, a lower alkyl group, or a lower alkoxy group, m represents a number of 1 from 3 inclusive, and n represents 2 or 3.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: March 3, 1998
    Assignee: Kowa Co., Ltd.
    Inventors: Hiroshi Nakao, Michihisa Umetani, Makoto Suda, Takao Nagoya
  • Patent number: 5724159
    Abstract: An image reading device comprises: a frame; a reading unit provided with a line sensor for reading a text image; a guide member fixed to the frame for supporting the reading unit such that the reading unit is free to slide in a predetermined direction; and a stay fixed to the frame. A screwhole is formed at a predetermined position in the reading unit, a first throughhole is formed in the frame coaxially with the screwhole, and a second throughhole is formed in the stay coaxially with the screwhole and the first throughout. Further, an elastic member having a third throughhole engages with the first throughhole in the frame, and a holding member is provided comprising a grip of large diameter and a screw of small diameter. The reading unit is fixed, when the image reading device is transported, by screwing the screw into the screwhole of the reading unit through the second throughhole of the stay and through the third throughhole of the elastic member.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: March 3, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kunihiko Nakagawa, Hiroshi Nakao