Patents by Inventor Yukihisa Wada

Yukihisa Wada 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: 9341566
    Abstract: To obtain a resin type identification method and a resin type identification apparatus with which an optimum infrared reflection spectrum for identifying a resin piece can be selected and accurate identification processing can be performed successively on individual resin pieces even when the resin pieces are identified using a single optical detector, at least one identifying signal power is selected by executing signal processing on the basis of signal powers corresponding to infrared reflection intensities obtained by emitting infrared light onto the resin piece, and the resin type of the resin piece is identified on the basis of an infrared reflection spectrum corresponding to the selected identifying signal power.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: May 17, 2016
    Assignees: Mitsubishi Electric Corporation, Shimadzu Corporation
    Inventors: Masaru Kinugawa, Muneaki Mukuda, Sonoko Umemura, Yasuyuki Nakagawa, Naoji Moriya, Toru Yamaguchi, Yukihisa Wada
  • Publication number: 20140203177
    Abstract: To obtain a resin type identification method and a resin type identification apparatus with which an optimum infrared reflection spectrum for identifying a resin piece can be selected and accurate identification processing can be performed successively on individual resin pieces even when the resin pieces are identified using a single optical detector, at least one identifying signal power is selected by executing signal processing on the basis of signal powers corresponding to infrared reflection intensities obtained by emitting infrared light onto the resin piece, and the resin type of the resin piece is identified on the basis of an infrared reflection spectrum corresponding to the selected identifying signal power.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 24, 2014
    Applicants: Shimadzu Corporation, Mitsubishi Electric Corporation
    Inventors: Masaru Kinugawa, Muneaki Mukuda, Sonoko Umemura, Yasuyuki Nakagawa, Naoji Moriya, Toru Yamaguchi, Yukihisa Wada
  • Publication number: 20140063494
    Abstract: In a flow cell, where a light introducing member for introducing light for measurement into a linear capillary through which sample liquid flows is attached to one end of the capillary, and a light leading out member for leading light transmitted through the capillary while transmitting through the sample liquid flowing through the capillary out to the outside is attached to the other end, the light introducing member is a light waveguide inserted into the capillary, and the light leading out member is a window member attached to an opening at the other end of the capillary so the loss of the amount of light transmitted through the capillary can be suppressed, while it is possible for flow cells of which the optical path has a different length to be attached without causing a problem relating to the positional relationships in the optical system, such as an absorbance detector.
    Type: Application
    Filed: June 20, 2013
    Publication date: March 6, 2014
    Inventors: Takahide HATAHORI, Naoji MORIYA, Yukihisa WADA, Yuji NAKAMA
  • Patent number: 8313628
    Abstract: A distribution of AC electric field regularly arranged in a cell is formed while storing a sample having particles dispersed in a medium in the cell, whereby the particles are dielectrically migrated in the medium to generate a diffraction grating by density distribution of the particles. Diffracted light generated by irradiating the diffraction grating by density distribution with measuring light is detected, and evaluation of dielectrophoretic intensities of the particles and/or the medium is performed from the detection result. According to this method, evaluation of dielectrophoretic characteristics can be performed without adhering a phosphor to particles, and since even a particle small in size can achieve a detection level by collecting a number of such particles to form a diffraction grating, dielectric characteristics of microparticles of several nanometers in diameter can be thus quantitatively measured with high sensitivity.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: November 20, 2012
    Assignee: Shimadzu Corporation
    Inventors: Yoshio Tsunazawa, Yukihisa Wada, Naoji Moriya, Kenji Takubo, Shinichiro Totoki, Haruo Shimaoka
  • Patent number: 8274654
    Abstract: A dielectric sheet 3 is arranged between a pair of electrodes 2a and 2b for forming an electric field in a cell 1 that stores therein a sample having particles dispersed movably in a medium, the dielectric sheet 3 being formed to include multiple mutually parallel slits 3a to form a diffraction grating, and a parallel light flux is applied to the diffraction grating to generate diffracted light. A gradient electric field in the vicinity of the slits 3a generated by applying a voltage between the electrodes 2a and 2b causes the particles P to migrate in such a manner as to cover the slits 3a or away from the slits 3a and thereby the contrast of the diffraction grating to vary, and whereby the diffusion coefficient and/or size of the particles P can be calculated from the temporal change of the diffracted light when the particles diffuse freely after stopping the application of the voltage.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: September 25, 2012
    Assignee: Shimadzu Corporation
    Inventor: Yukihisa Wada
  • Patent number: 7911610
    Abstract: The present invention relates to an optical measuring device which includes container for storing a sample, and an electrode pair for generating an electric field distribution upon impression of a voltage by an electrical power supply, thereby generating or extinguishing diffraction grating formed by a density modulation of particles within the sample. The particles within the sample are evaluated based upon a temporal change of an intensity of a diffracted light beam obtained by irradiating a light beam upon the diffraction grating formed by the density modulation of the particles. The electrodes constituting the electrode pair are configured to have a comb-like electrode teeth that are parallel with each other and are arranged such that the electrode teeth of one electrode are inserted between the electrode teeth of the other electrode. From such configuration, an optical measuring device of a high sensitivity and excellent S/N ratio can be obtained.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: March 22, 2011
    Assignee: Shimadzu Corporation
    Inventors: Naoji Moriya, Yuzo Nagumo, Yukihisa Wada, Naofumi Sakauchi, Fujio Inoue, Masahiro Takebe, Kenji Takubo, Shinichiro Totoki
  • Patent number: 7824504
    Abstract: An electronic device cleaning method includes the steps of: placing, on a processing face, a semiconductor substrate having an obverse face portion in which an electronic device is formed so that the processing face faces a reverse face of the semiconductor substrate; diselectrifying at least the reverse face of the semiconductor substrate by irradiating light to the semiconductor substrate by a light source provided at the processing face; and supplying a chemical solution to an obverse face of the semiconductor substrate after the diselectrifying step starts. Whereby, static electricity present on the processing face is removed reliably.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: November 2, 2010
    Assignee: Panasonic Corporation
    Inventor: Yukihisa Wada
  • Patent number: 7760356
    Abstract: The invention provides an optical measuring device capable of performing measuring using a transient diffraction grating by only adjusting probe light, and a nanoparticle measuring device using the same principle as the optical measuring device.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: July 20, 2010
    Assignee: Shimadzu Corporation
    Inventors: Naoji Moriya, Shinichro Totoki, Yuzo Nagumo, Yukihisa Wada, Naofumi Sakauchi, Fujio Inoue, Masahiro Takebe, Makiko Masutomi
  • Publication number: 20100177311
    Abstract: A dielectric sheet 3 is arranged between a pair of electrodes 2a and 2b for forming an electric field in a cell 1 that stores therein a sample having particles dispersed movably in a medium, the dielectric sheet 3 being formed to include multiple mutually parallel slits 3a to form a diffraction grating, and a parallel light flux is applied to the diffraction grating to generate diffracted light. A gradient electric field in the vicinity of the slits 3a generated by applying a voltage between the electrodes 2a and 2b causes the particles P to migrate in such a manner as to cover the slits 3a or away from the slits 3a and thereby the contrast of the diffraction grating to vary, and whereby the diffusion coefficient and/or size of the particles P can be calculated from the temporal change of the diffracted light when the particles diffuse freely after stopping the application of the voltage.
    Type: Application
    Filed: June 13, 2007
    Publication date: July 15, 2010
    Inventor: Yukihisa Wada
  • Publication number: 20100012496
    Abstract: A distribution of AC electric field regularly arranged in a cell is formed while storing a sample having particles dispersed in a medium in the cell, whereby the particles are dielectrically migrated in the medium to generate a diffraction grating by density distribution of the particles. Diffracted light generated by irradiating the diffraction grating by density distribution with measuring light is detected, and evaluation of dielectrophoretic intensities of the particles and/or the medium is performed from the detection result. According to this method, evaluation of dielectrophoretic characteristics can be performed without adhering a phosphor to particles, and since even a particle small in size can achieve a detection level by collecting a number of such particles to form a diffraction grating, dielectric characteristics of microparticles of several nanometers in diameter can be thus quantitatively measured with high sensitivity.
    Type: Application
    Filed: July 19, 2006
    Publication date: January 21, 2010
    Inventors: Yoshio Tsunazawa, Yukihisa Wada, Naoji Moriya, Kenji Takubo, Shinichiro Totoki, Haruo Shimaoka
  • Publication number: 20090251695
    Abstract: Within a container 1 which is storing a sample is generated a regularly arranged electric field distribution by an impression of a voltage upon an electrode pair 2 provided within the container 1, thereby generating diffraction grating formed by a density modulation of particles within the sample within the container 1, there is obtained information upon a diffusion of the particles based upon a temporal change in an extinction process of an intensity of a diffracted light beam obtained by irradiating a light beam upon the diffraction grating formed by the density modulation of the particles, the electrodes 21, 22 constituting the electrode pair 2 are configured to have multiple linear electrode teeth 21a, 22a parallel with each other, the electrodes 21, 22 are arranged such that the electrode teeth 21a of one electrode 21 are inserted between the electrode teeth 22a of the other electrode 22, thereby increasing the width of the diffraction grating formed by the density modulation of the particles, and a rati
    Type: Application
    Filed: January 17, 2006
    Publication date: October 8, 2009
    Inventors: Naoji Moriya, Yuzo Nagumo, Yukihisa Wada, Naofumi Sakauchi, Fujio Inoue, Masahiro Takebe, Kenji Takubo, Shinichiro Totoki
  • Patent number: 7544320
    Abstract: There is disclosed a method of manufacturing a porous ceramic structure, comprising the steps of: preparing a formed structure using a ceramic material containing a pore former and a binder; and drying and firing the formed structure, wherein the process of firing the formed structure comprises the steps of: holding a firing atmosphere temperature in a temperature range of ?50 to +10° C. with respect to a combustion start temperature of the binder from the time when the temperature reaches the combustion start temperature of the binder contained in the porous ceramic structure to be fired to the time when the binder is burnt out. According to this method, ceramic structures having not only a low porosity but also a high porosity can be manufactured without generating any crack during the firing.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: June 9, 2009
    Assignee: NGK Insulators, Ltd.
    Inventors: Yumi Toda, Yoshinori Yamamoto, Yukihisa Wada
  • Publication number: 20080257737
    Abstract: Disclosed is a technique for electrophoresis analysis, capable of eliminating the need for labeling a sample with a fluorescent or radioactive material. An electrophoresis cell is formed with a plurality of electrophoretic paths arranged in parallel relation to each other. Each of the electrophoretic paths has an upper end serving as a sample injection end, and a lower end received in a sample receiver. Further, each of the electrophoretic paths has a plurality of microchannels each extending uniformly from a position apart from the upper end by a predetermined distance to the lower end. The microchannels serve as a diffraction grating for diffracting light which irradiates a surface of the electrophoresis cell in a direction perpendicular to the surface, to produce diffracted light.
    Type: Application
    Filed: September 28, 2007
    Publication date: October 23, 2008
    Applicant: SHIMADZU CORPORATION
    Inventor: Yukihisa WADA
  • Patent number: 7431873
    Abstract: The present invention provides a method for manufacturing a honeycomb structure, the method including steps of: forming, by extrusion, a formed body 1 having an outer wall, partition walls provided inside the outer wall, and cells each surrounded by the partition walls as well as extending to an axial direction of the body; and drying the formed body 1.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: October 7, 2008
    Assignee: NGK Insulators, Ltd.
    Inventors: Masayuki Nate, Takahisa Kaneko, Yukihisa Wada
  • Patent number: 7429351
    Abstract: A method for manufacturing a porous ceramic structure which can produce a high porosity ceramic structure as well as a low porosity ceramic structure without causing cracks at the time of firing. A method for manufacturing a porous ceramic structure comprising molding a raw material which contains a ceramic material as a main component and a pore-forming agent and then drying and firing the obtained molded article. When the molded article is fired, the temperature of a firing environment is raised substantially in synchronization with the temperature of the central portion of the molded article within a temperature range in which at least a portion of the molded article is shrunk by firing.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: September 30, 2008
    Assignee: NGK Insulators, Ltd.
    Inventors: Yumi Toda, Yukihisa Wada, Yasushi Noguchi
  • Patent number: 7413625
    Abstract: Respective pieces of the porous honeycomb segments (2) are stacked while interposing the adhesive layers between respective adhered surfaces (2a), and are bonded together by performing main pressurization (F1, F2) on the whole through the porous honeycomb segments (2) located on an outermost layer after stacking a predetermined number of pieces. Main pressurization force at this time is simultaneously applied to all the honeycomb segments (2) and does not act as a separating force against any of the honeycomb segments (2).
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: August 19, 2008
    Assignee: NGK Insulators, Ltd.
    Inventors: Jun Fujita, Takahisa Kaneko, Yukihisa Wada
  • Publication number: 20080192252
    Abstract: The invention provides an optical measuring device capable of performing measuring using a transient diffraction grating by only adjusting probe light, and a nanoparticle measuring device using the same principle as the optical measuring device.
    Type: Application
    Filed: July 15, 2005
    Publication date: August 14, 2008
    Applicant: SHIMADZU CORPORATION
    Inventors: Naoji Moriya, Shinichiro Totoki, Yuzo Nagumo, Yukihisa Wada, Naofumi Sakauchi, Fujio Inoue, Masahiro Takebe, Makiko Masutomi
  • Publication number: 20080115383
    Abstract: A method of drying a honeycomb formed body comprising an outer wall, partition walls disposed inside the outer wall, and cells surrounded by the partition walls and extending in an axial direction of the honeycomb formed body. The method of drying a honeycomb formed body comprises a drying step of starting to dry in a state of covering at least a part of the outer wall with a guide covering the outer wall so as not to come into contact with the outer wall. Alternatively, the method of drying a honeycomb formed body comprises a drying step of drying in a state of covering at least a part of the outer wall with a guide that covers the outer wall so as to come into contact with the outer wall, wherein in the drying step the pressure applied to the outer wall by the guide at the contact portion is less than 0.2 MPa.
    Type: Application
    Filed: January 14, 2008
    Publication date: May 22, 2008
    Applicant: NGK Insulators, LTD.
    Inventors: Masayuki Nate, Makoto Osamura, Takahisa Kaneko, Yukihisa Wada
  • Publication number: 20080049213
    Abstract: The invention provides particle diameters measuring method and device capable of preventing noise from occurring due to an error in the formation of electrodes, capable of obtaining a high S/N ratio and the diffusion coefficients of the particles to be measured, and capable of exactly measuring the particle diameters of minute particles, such as nanoparticles.
    Type: Application
    Filed: April 20, 2007
    Publication date: February 28, 2008
    Applicant: SHIMADZU CORPORATION
    Inventor: Yukihisa Wada
  • Patent number: 7294304
    Abstract: There is disclosed a die for forming a honeycomb structure and a method of manufacturing the honeycomb structure by use of the die, in which variations of cell pitches are suppressed in a central portion and the vicinity of an outer periphery after drying and firing an extruded honeycomb structure, and the honeycomb structure having a uniform cell pitch can be manufactured. A die 1 for forming a honeycomb structure has a front surface provided with groovy slits 2 formed between cell blocks 3 and a back surface provided with back holes 4a communicating with the slits 2. The die 1 has a structure in which a pitch P of the adjacent cell blocks 3 is enlarged from a central portion of the front surface toward an outer periphery in a stepwise manner.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: November 13, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Wada, Tomohiro Iida, Jiro Maeda