Patents by Inventor Yasuhiro Tomioka

Yasuhiro Tomioka 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: 10337769
    Abstract: When a refrigerant amount balance control is executed, in indoor units where the refrigerant supercooling degree is lower than an average refrigerant supercooling degree, the refrigerant pressure on a downstream side of indoor expansion valves decreases since the degrees of opening of the valves are decreased. On the other hand, in an indoor unit where the refrigerant supercooling degree is higher than the average refrigerant supercooling degree, although the degrees of opening of the valves are made high, the refrigerant pressure on the downstream side of the valves decreases and this decreases the refrigerant pressure on the downstream side of the indoor expansion valve, so that the difference in pressure between on the upstream side and on the downstream side of the indoor expansion valve increases and the liquid refrigerant staying at an indoor heat exchanger of the indoor unit consequently flows out into a liquid pipe.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: July 2, 2019
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Yasuhiro Oka, Satoshi Tomioka, Makoto Shimotani, Takahiro Matsunaga
  • Patent number: 9452594
    Abstract: Provided is an electroconductive polymer composition with a good film forming property and a high electroconductivity. Also, provided is an electroconductive polymer material and an electroconductive substrate with a high electroconductivity and transparency. Further, provided is a solid electrolytic capacitor with a high capacity and a low ESR. Disclosed is an electroconductive polymer composition, containing an electroconductive polymer obtained by an oxidation polymerization by using an oxidant in a reaction solution which contains at least one monomer selected from the group consisting of pyrrole, thiophene and derivatives thereof, a polyacid or a salt thereof as a dopant, and a solvent containing water and an aprotic solvent.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: September 27, 2016
    Assignee: NEC Tokin Corporation
    Inventors: Tomoki Nobuta, Satoshi Suzuki, Yasuhisa Sugawara, Yasuhiro Tomioka
  • Patent number: 9455092
    Abstract: An electric conductive polymer suspension is produced by performing chemical oxidative polymerization of a monomer for providing an electric conductive polymer by using an oxidant in a solvent containing an organic acid or a salt thereof as a dopant to form an electric conductive polymer, recovering the electric conductive polymer, allowing an oxidant to act on the electric conductive polymer in an aqueous solvent containing a polyacid, and further mixing a dispersant with a branched structure and then pulverizing the electric conductive polymer. According to the electric conductive polymer suspension, an organic material high in conductivity, and excellent in adhesiveness to a substrate and water resistance, and a method for producing the material, as well as an electrolytic capacitor and a method for producing the capacitor can be provided.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: September 27, 2016
    Assignee: NEC Tokin Corporation
    Inventors: Yasuhisa Sugawara, Tomoki Nobuta, Satoshi Suzuki, Yasuhiro Tomioka
  • Patent number: 9183990
    Abstract: Provided is an electroconductive polymer composition with a good film forming property. Also, provided is an electroconductive polymer material with a high electroconductivity and a high transparency as well as an electroconductive substrate having the electroconductive polymer material on a substrate, and an electrode. Further, provided is an electronic device having the electrode as well as a solid electrolytic capacitor with a high capacitance and a low ESR. Disclosed is an electroconductive polymer composition, containing an electroconductive polymer in which a dopant is doped, a water-soluble polymer resin, and a solvent which contains water and an organic solvent whose dielectric constant is higher than that of water.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: November 10, 2015
    Assignee: NEC Tokin Corporation
    Inventors: Tomoki Nobuta, Yasuhisa Sugawara, Satoshi Suzuki, Yasuhiro Tomioka
  • Patent number: 9087640
    Abstract: Provided are an electroconductive polymer suspension solution and a method for producing the same, which has excellent adhesion to a substrate and excellent liquid resistance and which can provide an organic material having high electroconductivity. An electroconductive polymer suspension solution of an exemplary embodiment of the invention contains an electroconductive polymer, at least one kind of a water-soluble polyhydric alcohol, and at least one kind of a water-soluble organic substance having two or more functional groups which can be polycondensed with the water-soluble polyhydric alcohol.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: July 21, 2015
    Assignee: NEC Tokin Corporation
    Inventors: Yasuhisa Sugawara, Tomoki Nobuta, Naoki Takahashi, Yuji Yoshida, Satoshi Suzuki, Yasuhiro Tomioka
  • Patent number: 9076590
    Abstract: The present invention provides an electroconductive polymer suspension solution and an electroconductive polymer material which has a high electroconductivity and in which the time-related deterioration of the electroconductivity is suppressed. Also, the present invention provides an electrolytic capacitor with a low ESR using the electroconductive polymer material as a solid electrolyte and a method for producing the same. In the present invention, electroconductive polymer particles 1 in the electroconductive polymer material are bonded via organic dispersant 2 and cross-linker 3 to obtain a strong bond between electroconductive polymer particles 1.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: July 7, 2015
    Assignee: NEC Tokin Corporation
    Inventors: Yasuhisa Sugawara, Tomoki Nobuta, Satoshi Suzuki, Yasuhiro Tomioka, Hiroyuki Demizu, Hiroki Satoh
  • Patent number: 8940191
    Abstract: The present invention provides an electroconductive polymer solution in which the good dispersibility is maintained and the pH is arbitrarily adjusted, and an electroconductive polymer composition having an excellent heat resistance. Further, the present invention provides a solid electrolytic capacitor having an excellent reliability. The present invention is an electroconductive polymer solution, containing an electroconductive polymer in which a dopant is doped, a first compound having an amino group and a hydroxyl group, a second compound having a carboxylic acid group, and a dispersing medium.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: January 27, 2015
    Assignee: NEC Tokin Corporation
    Inventors: Tomoki Nobuta, Yasuhisa Sugawara, Satoshi Suzuki, Yasuhiro Tomioka
  • Patent number: 8861996
    Abstract: An image forming apparatus includes first and second rotation members which are a plurality of rotation members for performing image formation and rotate in contact with each other. A first driving motor drives the first rotation member. A second driving motor drives the second rotation member. The obtaining unit obtains pieces of motor driving information about driving states of the first or second driving motor at respective relative driving speeds when the relative driving speed of the second driving motor with respect to the driving speed of the first driving motor is changed to a plurality of relative driving speeds. The control unit controls the driving speed of at least either the first or second driving motor in image formation to reduce the relative speed difference between the circumferential velocities of the first and second rotation members based on the pieces of motor driving information obtained by the obtaining unit.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: October 14, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Tomioka, Yasuhiro Sendoda, Yoshimichi Ikeda
  • Publication number: 20140211372
    Abstract: An electric conductive polymer suspension is produced by performing chemical oxidative polymerization of a monomer for providing an electric conductive polymer by using an oxidant in a solvent containing an organic acid or a salt thereof as a dopant to form an electric conductive polymer, recovering the electric conductive polymer, allowing an oxidant to act on the electric conductive polymer in an aqueous solvent containing a polyacid, and further mixing a dispersant with a branched structure and then pulverizing the electric conductive polymer. According to the electric conductive polymer suspension, an organic material high in conductivity, and excellent in adhesiveness to a substrate and water resistance, and a method for producing the material, as well as an electrolytic capacitor and a method for producing the capacitor can be provided.
    Type: Application
    Filed: May 17, 2012
    Publication date: July 31, 2014
    Inventors: Yasuhisa Sugawara, Tomoki Nobuta, Satoshi Suzuki, Yasuhiro Tomioka
  • Patent number: 8773482
    Abstract: In an exposure apparatus employing an over filled optical system, the light quantity distribution on a scanning plane is kept nearly constant for a plurality of scanning light quantities. It selects the light quantity of the light beam irradiated onto the photosensitive body from a plurality of levels, and sets the light quantity selected. According to the light quantity, it selects one of a plurality of correction current profiles, and supplies a light source with a current passing through the correction based on the correction current profile selected. Since the light quantity of the light beam irradiated onto the photosensitive body is corrected by the correction current, the light quantity of the light beam on the photosensitive body becomes nearly constant in the scanning direction.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: July 8, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiro Tomioka
  • Publication number: 20140185192
    Abstract: Provided is a solid electrolytic capacitor having a low initial ESR in which the ESR increase with time can be suppressed. It is a solid electrolytic capacitor, including an electroconductive polymer layer, a graphite layer on the electroconductive polymer layer, and a silver layer on the graphite layer, wherein the electroconductive polymer layer and the graphite layer, and/or, the graphite layer and the silver layer are bonded by a chemical bond.
    Type: Application
    Filed: December 17, 2013
    Publication date: July 3, 2014
    Applicant: NEC TOKIN Corporation
    Inventors: Yasuhisa SUGAWARA, Koji Sakata, Yasuhiro Tomioka, Hiroyuki Demizu, Hiroki Satoh
  • Publication number: 20140168858
    Abstract: Provided is an electroconductive polymer solution containing an electroconductive polymer having high chemical resistance and a high electroconductivity. It is an electroconductive polymer solution, containing an electroconductive polymer having thiophene, aniline, pyrrole, or a derivative thereof as a repeating unit, wherein a dopant or a salt thereof having an amide bond and an anion group is doped into the electroconductive polymer.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: NEC TOKIN Corporation
    Inventors: Hiroki SATOH, Yasuhisa Sugawara, Hiroyuki Demizu, Yasuhiro Tomioka, Koji Sakata
  • Publication number: 20140098467
    Abstract: An electroconductive polymer having high electroconductivity, an electroconductive polymer aqueous solution, and an electroconductive polymer film are provided. Further, a solid electrolytic capacitor having a reduced ESR and a method for producing the same are provided. An electroconductive polymer according to an exemplary embodiment of the invention contains a monomolecular organic acid having one anion group and one or more hydrophilic group.
    Type: Application
    Filed: May 30, 2012
    Publication date: April 10, 2014
    Inventors: Yasuhisa Sugawara, Tomoki Nobuta, Yuji Yoshida, Satoshi Suzuki, Yasuhiro Tomioka
  • Publication number: 20140092529
    Abstract: Provided are an electroconductive polymer solution in which the carbon material has excellent dispersibility, an electroconductive polymer material which has a high electroconductivity and which can be produced by a simple method, and a solid electrolytic capacitor and a method for producing the same which has a low ESR without increasing a leakage current. An electroconductive polymer solution according to an exemplary embodiment of the invention contains an electroconductive polymer, a polysulfonic acid or a salt thereof which functions as a dopant to the electroconductive polymer, a mixture of a polyacid and a carbon material, and a solvent.
    Type: Application
    Filed: February 27, 2012
    Publication date: April 3, 2014
    Applicant: NEC TOKIN CORPORATION
    Inventors: Tomoki Nobuta, Yasuhisa Sugawara, Yuji Yoshida, Satoshi Suzuki, Yasuhiro Tomioka
  • Publication number: 20140022705
    Abstract: This is to provide an electroconductive polymer material which has excellent adhesion to a base and excellent water resistance. Also, this is to provide a solid electrolytic capacitor which has excellent water resistance by using the same. An electroconductive polymer solution according to the present invention contains an electroconductive polymer, at least one water-soluble multivalent alcohol, and at least one oxoacid having two or more hydroxy groups. Since a resin obtained by carrying out a polycondensation reaction of the water-soluble multivalent alcohol and the oxoacid has a cross-linked structure, an electroconductive polymer having lower water-absorbing property and more excellent water resistance in comparison with a resin having a linear structure can be obtained.
    Type: Application
    Filed: April 9, 2012
    Publication date: January 23, 2014
    Applicant: NEC Tokin Corporation
    Inventors: Yasuhiro Tomioka, Tomoki Nobuta, Yasuhisa Sugawara, Yuji Yoshida, Satoshi Suzuki
  • Publication number: 20140022706
    Abstract: An electric conductive polymer aqueous suspension is prepared by dispersing an electric conductive polymer powder whose surface is doped with a polyacid in which the number of anion groups is 50% or more and 99% or less with respect to the number of repeating units of the polyacid. By using the electric conductive polymer aqueous suspension, an organic material excellent in adhesiveness to a substrate and humidity resistance, and high in conductivity, as well as a solid electrolytic capacitor low in ESR and excellent in reliability in a high humidity atmosphere, and a method for producing the same can be provided.
    Type: Application
    Filed: April 9, 2012
    Publication date: January 23, 2014
    Inventors: Yasuhisa Sugawara, Tomoki Nobuta, Yuji Yoshida, Satoshi Suzuki, Yasuhiro Tomioka
  • Publication number: 20130236636
    Abstract: The present invention provides an electroconductive polymer solution in which the good dispersibility is maintained and the pH is arbitrarily adjusted, and an electroconductive polymer composition having an excellent heat resistance. Further, the present invention provides a solid electrolytic capacitor having an excellent reliability. The present invention is an electroconductive polymer solution, containing an electroconductive polymer in which a dopant is doped, a first compound having an amino group and a hydroxyl group, a second compound having a carboxylic acid group, and a dispersing medium.
    Type: Application
    Filed: February 27, 2013
    Publication date: September 12, 2013
    Applicant: NEC TOKIN Corporation
    Inventors: Tomoki NOBUTA, Yasuhisa SUGAWARA, Satoshi SUZUKI, Yasuhiro TOMIOKA
  • Publication number: 20130229750
    Abstract: The present invention provides an electroconductive polymer composition for a solid electrolytic capacitor which has a high electroconductivity and an excellent heat resistance. Also, the present invention provides a solid electrolytic capacitor having a low ESR and an excellent heat resistance. The present invention is an electroconductive polymer composition, obtained by removing a solvent or a dispersing medium from an electroconductive polymer solution comprising: an electroconductive polymer in which a dopant is doped; an oxazoline group-containing compound; a water-soluble compound having at least one or more of carboxyl group, aromatic phenol group and thiol group as a functional group; and a solvent or a dispersing medium.
    Type: Application
    Filed: February 20, 2013
    Publication date: September 5, 2013
    Applicant: NEC TOKIN Corporation
    Inventors: Tomoki NOBUTA, Yasuhisa SUGAWARA, Satoshi SUZUKI, Yasuhiro TOMIOKA
  • Patent number: 8405958
    Abstract: The present invention provides a conductive polymer suspension for providing a conductive polymer material having high conductivity and a method for producing the same, and particularly provides a solid electrolytic capacitor having low ESR and a method for producing the same. In an emulsion comprising a dopant of a low molecular organic acid or a salt thereof, obtained by emulsifying a monomer providing a conductive polymer, using a nonionic surfactant, in a water, the monomer is subjected to chemical oxidative polymerization, using an oxidant, to synthesize a conductive polymer. The obtained conductive polymer is purified, and then, the purified conductive polymer and an oxidant are mixed in an aqueous solvent containing a polyacid component to produce a conductive polymer suspension.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: March 26, 2013
    Assignee: NEC Tokin Corporation
    Inventors: Naoki Takahashi, Tomoki Nobuta, Yasuhisa Sugawara, Yuji Yoshida, Satoshi Suzuki, Yasuhiro Tomioka
  • Publication number: 20120256117
    Abstract: Provided are an electroconductive polymer suspension solution and a method for producing the same, which has excellent adhesion to a substrate and excellent liquid resistance and which can provide an organic material having high electroconductivity. An electroconductive polymer suspension solution of an exemplary embodiment of the invention contains an electroconductive polymer, at least one kind of a water-soluble polyhydric alcohol, and at least one kind of a water-soluble organic substance having two or more functional groups which can be polycondensed with the water-soluble polyhydric alcohol.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 11, 2012
    Inventors: Yasuhisa SUGAWARA, Tomoki Nobuta, Naoki Takahashi, Yuji Yoshida, Satoshi Suzuki, Yasuhiro Tomioka