Patents by Inventor Yoshihiro Arakawa

Yoshihiro Arakawa 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: 9617620
    Abstract: An alumina- or magnesia-reducing process in which a greenhouse gas or substance harmful to the human body is not emitted, which can achieve improved energy efficiency in comparison with the Hall-Heroult or Pidgeon methods. The process includes: introducing an alumina or magnesia powder with a carrier gas to the upstream side of a throat provided on a reducing unit; pressure-transferring the powder and carrier gas to the throat by an operative gas introduced to the upstream side of the throat; irradiating the throat with a laser beam to convert the alumina or magnesia into a plasma state and dissociate the alumina or magnesia thermally; jetting the thermally dissociated product through a nozzle provided on the downstream side of the throat at a supersonic speed to form a frozen flow; and isolating aluminum or magnesium. Hydrogen may be added to the operative gas to accelerate the reduction of alumina or magnesia.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 11, 2017
    Inventors: Yoshihiro Arakawa, Masakatsu Nakano, Makoto Matsui, Tetsuya Goto
  • Publication number: 20150226425
    Abstract: A method to provide renewable energy by utilizing aluminum, which is easy to store and stably suppliable, as a fuel without harming the environment or human body. Aluminum powder and oxygen are introduced into a combustion chamber and subjected to stationary combustion. The stationary combustion of aluminum is conducted by controlling either or both amounts of aluminum powder and oxygen introduced into the chamber. The amount of the aluminum powder is controlled by the amount of aluminum powder sucked into a jet stream of a carrier gas that introduces the powder into the combustion chamber, or by the amount of an impurity to be mixed with the powder. The amount of oxygen is controlled by the mixing ratio of oxygen to a diluent gas introduced simultaneously. The alumina from the combustion is recovered, reduced to aluminum, and recycled as a fuel.
    Type: Application
    Filed: March 8, 2013
    Publication date: August 13, 2015
    Inventors: Tetsuya Goto, Yoshihiro Arakawa, Shuhei Takahashi, Masakatsu Nakano, Makoto Matsui
  • Publication number: 20150203937
    Abstract: An alumina- or magnesia-reducing process in which a greenhouse gas or substance harmful to the human body is not emitted, which can achieve improved energy efficiency in comparison with the Hall-Heroult or Pidgeon methods. The process includes: introducing an alumina or magnesia powder with a carrier gas to the upstream side of a throat provided on a reducing unit; pressure-transferring the powder and carrier gas to the throat by an operative gas introduced to the upstream side of the throat; irradiating the throat with a laser beam to convert the alumina or magnesia into a plasma state and dissociate the alumina or magnesia thermally; jetting the thermally dissociated product through a nozzle provided on the downstream side of the throat at a supersonic speed to form a frozen flow; and isolating aluminum or magnesium. Hydrogen may be added to the operative gas to accelerate the reduction of alumina or magnesia.
    Type: Application
    Filed: March 8, 2013
    Publication date: July 23, 2015
    Inventors: Yoshihiro Arakawa, Masakatsu Nakano, Makoto Matsui, Tetsuya Goto
  • Publication number: 20110033365
    Abstract: This invention provides a process and apparatus for producing a carbonaceous film such as a DLC film using a solid raw material without the need to supply a high energy radiation such as a laser beam. The process comprises providing a solid organic material as a raw material, applying a discharge energy to the material to form plasma, and depositing the plasma onto a base material to form a carbonaceous film. This process is preferably carried out by using a film production apparatus (1) comprising discharge means (10). The discharge means (10) comprises a pair of electrodes (a raw material holder) (12, 14) for holding a raw material (50) and voltage applying means (20) for applying voltage across the electrodes.
    Type: Application
    Filed: December 7, 2007
    Publication date: February 10, 2011
    Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, THE UNIVERSITY OF TOKYO
    Inventors: Hiroyuki Kousaka, Hiroyuki Koizumi, Eri Hamajima, Noritsugu Umehara, Yoshihiro Arakawa
  • Patent number: 7541371
    Abstract: According to the present invention, there is provided a method for treating a motor neuron disease, comprising the step of administering a therapeutically effective amount of a compound having serotonin receptor antagonist activity or its pharmacologically acceptable salt or their solvate optionally together with a pharmaceutically acceptable carrier to a mammal for which the treatment of said disease is indicated.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: June 2, 2009
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Yoshihiro Arakawa, Makoto Miyazaki
  • Publication number: 20080027039
    Abstract: According to the present invention, there is provided a method for treating a motor neuron disease, comprising the step of administering a therapeutically effective amount of a compound having serotonin receptor antagonist activity or its pharmacologically acceptable salt or their solvate optionally together with a pharmaceutically acceptable carrier to a mammal for which the treatment of said disease is indicated.
    Type: Application
    Filed: February 20, 2007
    Publication date: January 31, 2008
    Inventors: Yoshihiro Arakawa, Makoto Miyazaki
  • Patent number: 6745731
    Abstract: A valve driving device reduces the volume of the pressure chamber and decreases the energy supplied during driving to open the main valve. As a result of this initial energy, the main valve is lifted by inertial motion. When the main valve is opened (lifted), a first actuating valve is opened, and high-pressure actuating fluid is supplied to the pressure chamber. When in this process the pressure in the pressure chamber falls below the pressure of a low-pressure chamber, a second actuating valve opens independently, and low-pressure actuating fluid is introduced into the pressure chamber. By this means negative pressure in the pressure chamber can be prevented, and the main valve can be held in a lift position equivalent to the initial energy. When the main valve is to be closed, an actuator forcibly opens the second actuating valve.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: June 8, 2004
    Assignee: Isuzu Motors Limited
    Inventors: Tsuneo Tanaka, Akihiko Minato, Yoshihiro Arakawa
  • Publication number: 20030213446
    Abstract: A valve driving device reduces the volume of the pressure chamber and decreases the energy supplied during driving to open the main valve. As a result of this initial energy, the main valve is lifted by inertial motion. When the main valve is opened (lifted), a first actuating valve is opened, and high-pressure actuating fluid is supplied to the pressure chamber. When in this process the pressure in the pressure chamber falls below the pressure of a low-pressure chamber, a second actuating valve opens independently, and low-pressure actuating fluid is introduced into the pressure chamber. By this means negative pressure in the pressure chamber can be prevented, and the main valve can be held in a lift position equivalent to the initial energy. When the main valve is to be closed, an actuator forcibly opens the second actuating valve.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 20, 2003
    Applicant: Isuzu Motors Limited
    Inventors: Tsuneo Tanaka, Akihiko Minato, Yoshihiro Arakawa
  • Patent number: 6602687
    Abstract: The present invention relates to nucleic acid sequences encoding ciliary neurotrophic factor (CNTF) and to the proteins, peptides, and derivatives produced therefrom. In various embodiments of the invention, the nucleic acid sequences, proteins, and peptides of the invention may be used in the treatment of a variety of neurological diseases and disorders, including Alzheimer's disease. In a specific embodiment of the invention, CNTF may be used to support the growth of spinal cord neurons, thereby providing a method of treating spinal cord damage caused by trauma infarction, infection, nutritional deficiency or toxic agents. The present invention also relates to a novel method for producing substantilly pure CNTF. The invention also relates to pharmaceutical compositions comprising effective amounts of CNTF gene products which may be used in the diagnosis and treatment of a variety of neurologial diseases and disorders.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: August 5, 2003
    Assignee: Regeneron Pharmaceuticals, Inc.
    Inventors: Michael Sendtner, Kurt Stockli-Rippstein, Friedrich Lottspeich, Yoshihiro Arakawa, Patrick Desmond Carroll, Rudolf Georg Gotz, Georg W. Kreutzberg, Dan B. Lindholm, Piotr Masiakowski, Vivien Wong, Nancy Ip, Mark E. Furth, Nikos Panayotatos, Hans Thoenen
  • Patent number: 5398040
    Abstract: An adaptive crosshatch signal generator includes a frequency detector for detecting a horizontal scanning frequency, a square calculator supplied with the detected output of the frequency detector, and a variable pulse width multivibrator controlled to have an output pulse width substantially in inverse proportion to the squared output. Longitudinal lines of a crosshatch signal are formed by the output pulses of the multivibrator. The crosshatch signal has a longitudinal line width which is always substantially equivalent to the distance between adjacent scanning lines and is generated by using a simplified configuration irrespective of input signal format.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: March 14, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Masanori Ogino, Takeo Yamada, Miyuki Ikeda, Yoshihiro Arakawa
  • Patent number: 4980614
    Abstract: A convergence correction circuit according to the present invention has a phased locked loop including a programmable counter. The programmable counter has programmable count start and end points. The output of the programmable counter is supplied to a memory storing convergence distortion correcting data therein. As the horizontal screen size is increased, a value closer to the lower limit 0 of the start point as compared with that taken when the horizontal size is small is set as the count start point of the programmable counter, and a value closer to the upper limit (2.sup.7 -1) of the end point as compared with that taken when the horizontal size is small is set as the count end point. In accordance with the horizontal screen size, the count start and end points of the programmable counter are changed. Correct convergence correction is performed even if the horizontal screen size is changed.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: December 25, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Takeo Yamada, Miyuki Ikeda, Toshiyuki Kimoto, Masanori Ogino, Tsuneo Fujikura, Yoshihiro Arakawa
  • Patent number: 4707468
    Abstract: A novel polypeptide is defined by the below shown formula and is useful as an analgesic. ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom or a lower alkyl or lower alkenyl group, A represents a D-amino acid, Gly or Sar provided that when the D-amino acid is D-Cys, it is bonded with L-Cys or D-Cys in position 5 through a S--S bond to effect intramolecular ring closure, B represents L-Phe or D-Phe in which the benzene ring may be substituted or an .alpha.-N-alkyl derivative thereof, C represents an L-amino acid, D-Cys or an .alpha.-N-alkyl derivative thereof, D and E each represent an L- or D-basic amino acid or an .alpha.-N-alkyl derivative thereof, F represents a group of the formula --OR.sup.3 (in which R.sup.3 is H or a lower alkyl group), a group of the formula: ##STR2## (in which R.sup.4 and R.sup.5 are the same or different and each represents H or a lower alkyl group), a group of the formula: --G--OR.sup.
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: November 17, 1987
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Yutaka Tsuchiya, Takeru Kaneko, Takahiro Nakazawa, Masuhiro Ikeda, Shin Araki, Kiyomi Yamatsu, Shinro Tachibana, Yoshihiro Arakawa
  • Patent number: 4551273
    Abstract: A novel peptide having the primary structure: N-Me-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-D.Ile-Arg-Pro-Lys-D.Leu-Lys-Trp-NH.sub.2 (in which D.Ile and D.Leu represent a D-Ile and a D-Leu residue respectively, other abbreviations of amino acids represent each an L-amino acid residue and Me represents a methyl group), which exhibits a remarkable analgesic effect when administered peripherally. A process for the preparation thereof by a solid phase method is also disclosed.
    Type: Grant
    Filed: January 31, 1984
    Date of Patent: November 5, 1985
    Assignee: Eisai Co., Ltd.
    Inventors: Shinro Tachibana, Shizuko Ohya, Yoshihiro Arakawa, Takahiro Nakazawa, Takeru Kaneko, Masuhiro Ikeda, Kiyomi Yamatsu
  • Patent number: 3979641
    Abstract: A vertical deflection output circuitry for a television receiver wherein two transistors are connected in single ended and push-pull relation, and the output junction point of the two transistors is connected, to a D.C. power source for supplying a higher voltage than that of a power source for the vertical deflection output circuitry, through a switch which is turned off during the vertical scan period and turned on during the vertical retrace period.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: September 7, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Yoshihiro Arakawa, Akio Nakashima, Shunji Iwabuchi, Kenji Ando