Patents by Inventor Koji Asada

Koji Asada 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: 11146877
    Abstract: A sound output device includes a sound generating portion that generates a sound, a sound guiding portion that takes in the sound generated in the sound generating portion from one end, and a holding portion that holds the sound guiding portion in the vicinity of the other end. The holding portion is engaged with an intertragic notch, and supports the sound guiding portion such that a sound output hole of the other end of the sound guiding portion to face a depth side of an ear canal. Even in a state where the listener wears the sound output device, the sound output device does not block an ear cavity of the listener, and the listener can listen to the ambient sound.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: October 12, 2021
    Assignee: SONY CORPORATION
    Inventors: Go Igarashi, Satoshi Suzuki, Kohei Asada, Koji Nageno
  • Publication number: 20210267885
    Abstract: Disclosed herein is an aqueous composition comprising 0.001-0.1% (w/v) atropine or a salt thereof, a water-soluble polymer, and buffer (I), which is at a pH range of 6 or lower, wherein the buffer (I) is at least one selected from the group consisting of a phosphate buffer, an aminocarboxylate buffer, a carbonate buffer, an acetate buffer, a tartrate buffer, a borate buffer, and trometamol.
    Type: Application
    Filed: May 24, 2017
    Publication date: September 2, 2021
    Inventors: Donald TAN, Roger BEUERMAN, Hiroyuki ASADA, Kyohei TAKAHASHI, Koji SAKANAKA, Takashi MORIMOTO, Toyomi FUJISAWA
  • Patent number: 10686098
    Abstract: A nitride semiconductor light emitting element includes: an n-side layer; a p-side layer; an active layer disposed between the n-side layer and the p-side layer, the active layer comprising: a well layer containing Al, Ga, and N, and a barrier layer containing Al, Ga, and N, wherein an Al content of the barrier layer is higher than an Al content of the well layer; and an electron blocking structure layer between the active layer and the p-side layer, the electron blocking structure comprising: a first electron blocking layer disposed between the p-side layer and the active layer, a second electron blocking layer disposed between the p-side layer and the first electron blocking layer, and an intermediate layer disposed between the first electron blocking layer and the second electron blocking layer.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: June 16, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Koji Asada, Tokutaro Okabe
  • Patent number: 10505074
    Abstract: A nitride semiconductor light emitting element includes: an n-side layer; a p-side layer; an active layer including: a well layer containing Al, Ga, and N, and a barrier layer containing Al, Ga, and N, wherein an Al content of the barrier layer is higher than that of the well layer; and an electron blocking structure layer between the active layer and the p-side layer and including: a first electron blocking layer disposed between the p-side layer and the active layer and having a bandgap larger than that of the barrier layer, a second electron blocking layer disposed between the p-side layer and the first electron blocking layer and having a bandgap larger than that of the barrier layer, but smaller than the bandgap of the first electron blocking layer, and an intermediate layer disposed therebetween and having a bandgap smaller than that of the second electron blocking layer.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: December 10, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Koji Asada, Tokutaro Okabe
  • Publication number: 20190371968
    Abstract: A nitride semiconductor light emitting element includes: an n-side layer; a p-side layer; an active layer disposed between the n-side layer and the p-side layer, the active layer comprising: a well layer containing Al, Ga, and N, and a barrier layer containing Al, Ga, and N, wherein an Al content of the barrier layer is higher than an Al content of the well layer; and an electron blocking structure layer between the active layer and the p-side layer, the electron blocking structure comprising: a first electron blocking layer disposed between the p-side layer and the active layer, a second electron blocking layer disposed between the p-side layer and the first electron blocking layer, and an intermediate layer disposed between the first electron blocking layer and the second electron blocking layer.
    Type: Application
    Filed: August 20, 2019
    Publication date: December 5, 2019
    Applicant: NICHIA CORPORATION
    Inventors: Koji ASADA, Tokutaro OKABE
  • Patent number: 10453997
    Abstract: A nitride semiconductor light emitting element includes: an n-side layer; a p-side layer; an active layer including: a well layer containing Al, Ga, and N, and a barrier layer containing Al, Ga, and N, wherein an Al content of the barrier layer is higher than that of the well layer; and an electron blocking structure layer between the active layer and the p-side layer and including: a first electron blocking layer disposed between the p-side layer and the active layer and having a bandgap larger than that of the barrier layer, a second electron blocking layer disposed between the p-side layer and the first electron blocking layer and having a bandgap larger than that of the barrier layer, but smaller than the bandgap of the first electron blocking layer, and an intermediate layer disposed therebetween and having a bandgap smaller than that of the second electron blocking layer.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: October 22, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Koji Asada, Tokutaro Okabe
  • Publication number: 20180287014
    Abstract: A nitride semiconductor light emitting element includes: an n-side layer; a p-side layer; an active layer including: a well layer containing Al, Ga, and N, and a barrier layer containing Al, Ga, and N, wherein an Al content of the barrier layer is higher than that of the well layer; and an electron blocking structure layer between the active layer and the p-side layer and including: a first electron blocking layer disposed between the p-side layer and the active layer and having a bandgap larger than that of the barrier layer, a second electron blocking layer disposed between the p-side layer and the first electron blocking layer and having a bandgap larger than that of the barrier layer, but smaller than the bandgap of the first electron blocking layer, and an intermediate layer disposed therebetween and having a bandgap smaller than that of the second electron blocking layer.
    Type: Application
    Filed: September 21, 2016
    Publication date: October 4, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Koji ASADA, Tokutaro OKABE
  • Patent number: 9925770
    Abstract: A wiring substrate is provided with a surface wiring on at least one surface, a through hole which passes through the wiring substrate, and a through wiring which is formed in the through hole and is connected to a surface wiring, in which an inner surface of the through hole is a rough surface, and electric resistance of the through wiring is equal to or less than the electric resistance of the surface wiring.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: March 27, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Motoki Takabe, Shuichi Tanaka, Yasuyuki Matsumoto, Koji Asada, Eiju Hirai
  • Patent number: 9919528
    Abstract: A liquid ejecting head includes a pressure chamber formation substrate having a pressure chamber formed therein, a flow path formation substrate that is connected to the pressure chamber formation substrate, and that has a flow path in communication with the pressure chamber formed in a state penetrating through the flow path formation substrate in a thickness direction thereof, and a nozzle plate that is connected to the flow path formation substrate on an opposite side to the pressure chamber formation substrate, and that has a nozzle in communication with the flow path opened therein. The flow path formation substrate is configured from a single substrate, and an opening area on a pressure chamber side of the flow path is formed wider than an opening area on a nozzle side of the flow path.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: March 20, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Motoki Takabe, Yasuyuki Matsumoto, Shunya Fukuda, Koji Asada, Daisuke Kobayashi
  • Publication number: 20170217177
    Abstract: A wiring substrate is provided with a surface wiring on at least one surface, a through hole which passes through the wiring substrate, and a through wiring which is formed in the through hole and is connected to a surface wiring, in which an inner surface of the through hole is a rough surface, and electric resistance of the through wiring is equal to or less than the electric resistance of the surface wiring.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 3, 2017
    Inventors: Motoki TAKABE, Shuichi TANAKA, Yasuyuki MATSUMOTO, Koji ASADA, Eiju HIRAI
  • Publication number: 20170087841
    Abstract: A liquid ejecting head includes a pressure chamber formation substrate having a pressure chamber formed therein, a flow path formation substrate that is connected to the pressure chamber formation substrate, and that has a flow path in communication with the pressure chamber formed in a state penetrating through the flow path formation substrate in a thickness direction thereof, and a nozzle plate that is connected to the flow path formation substrate on an opposite side to the pressure chamber formation substrate, and that has a nozzle in communication with the flow path opened therein. The flow path formation substrate is configured from a single substrate, and an opening area on a pressure chamber side of the flow path is formed wider than an opening area on a nozzle side of the flow path.
    Type: Application
    Filed: September 28, 2016
    Publication date: March 30, 2017
    Inventors: Motoki TAKABE, Yasuyuki MATSUMOTO, Shunya FUKUDA, Koji ASADA, Daisuke KOBAYASHI
  • Publication number: 20160059552
    Abstract: An inclined plane which inclines toward a lower plane of a ceiling portion, that is, the lower plane of a communication substrate from a ceiling plane of a second liquid chamber is formed in the second liquid chamber of the communication substrate. Therefore, an individual communication opening is formed, in a state of penetrating the communication substrate from the inclined plane. One end (lower end) of the individual communication opening communicates with the second liquid chamber by being open onto the inclined plane, and the other end (upper end) of the individual communication opening individually communicates with a pressure chamber of a pressure chamber forming substrate by being open onto an upper plane of the communication substrate. When a thickness of the communication substrate is referred to as T, a length of the individual communication opening is referred to as L, and a substantial depth of the second liquid chamber is referred to as D, the dimensions are configured so as to be L+D>T.
    Type: Application
    Filed: August 28, 2015
    Publication date: March 3, 2016
    Inventors: Motoki TAKABE, Koji ASADA, Hidemichi FURIHATA, Hiroyasu ASAKAWA
  • Patent number: 9254657
    Abstract: An inclined plane which inclines toward a lower plane of a ceiling portion, that is, the lower plane of a communication substrate from a ceiling plane of a second liquid chamber is formed in the second liquid chamber of the communication substrate. Therefore, an individual communication opening is formed, in a state of penetrating the communication substrate from the inclined plane. One end (lower end) of the individual communication opening communicates with the second liquid chamber by being open onto the inclined plane, and the other end (upper end) of the individual communication opening individually communicates with a pressure chamber of a pressure chamber forming substrate by being open onto an upper plane of the communication substrate. When a thickness of the communication substrate is referred to as T, a length of the individual communication opening is referred to as L, and a substantial depth of the second liquid chamber is referred to as D, the dimensions are configured so as to be L+D>T.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: February 9, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Motoki Takabe, Koji Asada, Hidemichi Furihata, Hiroyasu Asakawa
  • Patent number: 9156265
    Abstract: A piezoelectric actuator which is provided on the flow path formation substrate, and a protection substrate which is bonded to the flow path formation substrate on the piezoelectric actuator side, the method including: bonding the flow path formation substrate on which the piezoelectric actuator is formed, and the protection substrate to form a bonded body; bonding a sealing member to the protection substrate of the bonded body on the surface side opposite the flow path formation substrate, and disposing a protection material containing a nitro compound in a space between the sealing member and the protection substrate.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: October 13, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Koji Asada
  • Publication number: 20140285415
    Abstract: A control signal for controlling a light emitting element is generated according to a set value of an amount of light emission. In this event, each of a current value and a duty ratio of the control signal changes according to the set value of the amount of light emission. Further, it is preferable that each of the current value and the duty ratio changes according to the set value when the set value of the amount of light emission is less than a predetermined threshold value, and the current value changes according to the set value whereas the duty ratio is constant when the set value of the amount of light emission is greater than the predetermined threshold value.
    Type: Application
    Filed: March 25, 2014
    Publication date: September 25, 2014
    Applicant: Yamaha Corporation
    Inventors: Koji ASADA, Masahiro Sasagawa, Yoshihiro Suzuki
  • Publication number: 20140284305
    Abstract: A piezoelectric actuator which is provided on the flow path formation substrate, and a protection substrate which is bonded to the flow path formation substrate on the piezoelectric actuator side, the method including: bonding the flow path formation substrate on which the piezoelectric actuator is formed, and the protection substrate to form a bonded body; bonding a sealing member to the protection substrate of the bonded body on the surface side opposite the flow path formation substrate, and disposing a protection material containing a nitro compound in a space between the sealing member and the protection substrate.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 25, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Koji ASADA
  • Patent number: 8674904
    Abstract: A color display device includes a display area where a non-rectangular display range is determined. Pixels of which a display color is set to a mixed color formed by adjusting brightness of sub-pixels having a plurality of different single-colors are arranged within the display area. In addition, parts of the pixels subjected to non-coloring drive and display are arranged so as to extend to the contour of the display area.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: March 18, 2014
    Assignee: Japan Display West Inc.
    Inventors: Satoshi Taguchi, Susumu Iida, Koji Asada, Miyuki Ataka
  • Publication number: 20090195481
    Abstract: A color display device includes a display area where a non-rectangular display range is determined. Pixels of which a display color is set to a mixed color formed by adjusting brightness of sub-pixels having a plurality of different single-colors are arranged within the display area. In addition, parts of the pixels subjected to non-coloring drive and display are arranged so as to extend to the contour of the display area.
    Type: Application
    Filed: December 9, 2008
    Publication date: August 6, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Satoshi TAGUCHI, Susumu IIDA, Koji ASADA, Miyuki ATAKA
  • Patent number: 7202508
    Abstract: A liquid crystal device is provided that comprises a plurality of R colored layers, a plurality of G colored layers, and a plurality of B colored layers that are formed on either one of a pair of substrates and are aligned in a predetermined arrangement in plan view, a light-shielding layer formed between the colored layers, and a plurality of spacers formed on either one of the pair of substrates and protruding toward the other substrate. The plurality of spacers is formed around the B colored layers and/or the R colored layers, but is not formed around the G colored layers. Thus, even if a positional deviation occurs between the substrates, the spacers do not get into the G colored layers.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: April 10, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Satoshi Taguchi, Koji Asada, Motohiro Kamijima
  • Patent number: D557545
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: December 18, 2007
    Assignee: Kabushiki Kaisha ASSE
    Inventor: Koji Asada