Patents by Inventor Akihiro Shiraishi

Akihiro Shiraishi 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: 10342968
    Abstract: The present invention verifies a method of reducing skin irritation (particularly, cumulative skin irritation) caused by transdermal administration of a local anesthetic using iontophoresis, and provides an electrode pad for relief from a puncture pain which is safe not only at single administration but also at repeated administrations. The electrode pad comprises a base sheet; an electrode placed on the base sheet; an adhesive sheet placed on the base sheet and having an opening, within which the electrode being exposed; and a medicament reservoir containing a local anesthetic and placed in the opening of the adhesive sheet while being in contact with the electrode. An inner peripheral surface of the opening of the adhesive sheet and an outer peripheral surface of the medicament reservoir are prevented from coming into contact with human skin while contacting with each other, and thereby skin irritation is reduced.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: July 9, 2019
    Assignee: TEIKOKU SEIYAKU CO., LTD.
    Inventors: Akihiro Hasui, Atsuhiko Shiraishi, Ken-ichi Hattori, Shinji Tanaka, Hirokazu Takahashi, Makoto Takahashi
  • Publication number: 20190191132
    Abstract: A projection video display apparatus includes an input unit to input a video signal; a display to display the inputted video signal; a plurality of light sources to generate light; an illumination optical system to guide the generated light to the display; a projection optical system to project light via the display; and a controller to control the light sources, a lighting ratio and a current value per time for each light source. The controller has a black display control mode, for each light source, which makes a relative rate of a lighting ratio for a light source with a specific color smaller than the other light sources, and reduces the current value of the other light sources to be less than a current value of the light source with the specific color when compared with a case where the input video signal is a white signal.
    Type: Application
    Filed: August 5, 2016
    Publication date: June 20, 2019
    Applicant: MAXELL, LTD.
    Inventors: Shuhei KOBAYASHI, Kazuo SHIKITA, Akihiro SHIRAISHI, Naoya OKA
  • Patent number: 10313646
    Abstract: A projection-type video image display apparatus measures quantity of light of a plurality of light sources by maintaining illuminance distribution of an illumination luminous flux. The apparatus includes R, B and G light sources, and a mirror configured to reflect white light obtained by synthesizing the light rays emitted from the respective light sources while making the white light pass through the mirror based on predetermined transmittance characteristics. An illuminance sensor disposed on the mirror's back surface and configured to measure quantity of light for each color of the white light which passed through the mirror, and a controller adjusts an amount of light emission of the light source of each color based on the quantity of light measured. The mirror allows the transmittance characteristics of each light transmittance in the center wavelengths of the R and B lights sources to be larger than those of the G light source.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: June 4, 2019
    Assignee: Maxell, Ltd.
    Inventors: Akihiro Shiraishi, Kazuo Shikita
  • Publication number: 20190041731
    Abstract: In a projection-type image display apparatus configured to project images formed on a display element by using light from a plurality of light sources, the apparatus includes light-source coolers provided to the light sources and configured to cool the light sources, and the light-source coolers are arranged so that light-source heat dissipating directions of all the light-source coolers are substantially the same among the light-source coolers the light-source heat dissipating directions being directed toward heat dissipating parts dissipating the heat of the light sources with reference to heat absorbing parts absorbing the heat of the light sources.
    Type: Application
    Filed: September 23, 2016
    Publication date: February 7, 2019
    Applicant: MAXELL, LTD.
    Inventors: Takeshi KATAYAMA, Kazuo SHIKITA, Akihiro SHIRAISHI, Tatsuya INO, Hiroyuki INOUE
  • Publication number: 20190028680
    Abstract: A projection-type video image display apparatus measures quantity of light of a plurality of light sources by maintaining illuminance distribution of an illumination luminous flux. The apparatus includes R, B and G light sources, and a mirror configured to reflect white light obtained by synthesizing the light rays emitted from the respective light sources while making the white light pass through the mirror based on predetermined transmittance characteristics. An illuminance sensor disposed on the mirror's back surface and configured to measure quantity of light for each color of the white light which passed through the mirror, and a controller adjusts an amount of light emission of the light source of each color based on the quantity of light measured. The mirror allows the transmittance characteristics of each light transmittance in the center wavelengths of the R and B lights sources to be larger than those of the G light source.
    Type: Application
    Filed: October 25, 2016
    Publication date: January 24, 2019
    Applicant: MAXELL, LTD.
    Inventors: Akihiro SHIRAISHI, Kazuo SHIKITA
  • Publication number: 20180217351
    Abstract: A projection type image display device includes a focus adjusting unit that adjusts a focal position of a projection lens. The projection lens includes a front side lens group and a rear side lens group which are displaceable toward the screen. The focus adjusting unit includes a back focus adjusting unit that adjusts a position of the rear side lens group and a peripheral adjusting unit that adjusts a position of the front side lens group, and the back focus adjusting unit and the peripheral adjusting unit independently adjust the position of the rear side lens group and the position of the front side lens group by individual driving of motors.
    Type: Application
    Filed: November 14, 2014
    Publication date: August 2, 2018
    Applicant: Hitachi Maxell, Ltd.
    Inventors: Akihiro SHIRAISHI, Kazuo SHIKITA, Satoshi NAKAYAMA
  • Patent number: 8896638
    Abstract: An initial light control value calculation section calculates the backlight's initial light control value K0 according to brightness of an inputted image signal for each area. A black area measurement section measures a black area S by obtaining ratio of the number of pixels satisfying Y?Y0 (Y: brightness signal level, Y0: black level threshold) in the screen. A minimum light control value output section determines a minimum light control value Kmin based on comparison between the measured black area S and a black area threshold S0 and outputs a maximum value permissible for the light control value as the value Kmin when the black area S is the threshold value S0 or less. An LED control signal calculation section outputs a control signal to LED light sources based on a light control value K1 as the higher one of K0 and Kmin.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: November 25, 2014
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Hiroyuki Kurabayashi, Yasutaka Tsuru, Yuya Ogi, Kazuhiko Tanaka, Akihiro Shiraishi
  • Patent number: 8390640
    Abstract: A television device structured to automatically adjust the color temperature on the display screen in accordance with the viewing environment includes an external light detection unit or an optical sensor for detecting the illuminance and the tint of the ambient light, and an image quality control unit or a microcomputer for adjusting quality of the video image to be displayed on the display panel. The image quality control unit adjusts the color temperature of the video image to be displayed in accordance with the illuminance value and the tint value detected by the external light detection unit. The optical sensor includes an illuminance sensor for mainly detecting the visible light, and an infrared sensor for mainly detecting the infrared light. The illuminance value and the tint value are obtained based on the output values of those two sensors.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: March 5, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Hiroshi Aoki, Akira Kitazume, Daisuke Honda, Naoya Oka, Yuki Nagano, Hiroyuki Kurabayashi, Akihiro Shiraishi, Toshiaki Ohyama
  • Publication number: 20110267379
    Abstract: An initial light control value calculation section calculates the backlight's initial light control value K0 according to brightness of an inputted image signal for each area. A black area measurement section measures a black area S by obtaining ratio of the number of pixels satisfying Y?Y0 (Y: brightness signal level, Y0: black level threshold) in the screen. A minimum light control value output section determines a minimum light control value Kmin based on comparison between the measured black area S and a black area threshold S0 and outputs a maximum value permissible for the light control value as the value Kmin when the black area S is the threshold value S0 or less. An LED control signal calculation section outputs a control signal to LED light sources based on a light control value K1 as the higher one of K0 and Kmin.
    Type: Application
    Filed: April 15, 2011
    Publication date: November 3, 2011
    Inventors: Hiroyuki KURABAYASHI, Yasutaka Tsuru, Yuya Ogi, Kazuhiko Tanaka, Akihiro Shiraishi
  • Publication number: 20100220109
    Abstract: A television device structured to automatically adjust the color temperature on the display screen in accordance with the viewing environment includes an external light detection unit or an optical sensor for detecting the illuminance and the tint of the ambient light, and an image quality control unit or a microcomputer for adjusting quality of the video image to be displayed on the display panel. The image quality control unit adjusts the color temperature of the video image to be displayed in accordance with the illuminance value and the tint value detected by the external light detection unit. The optical sensor includes an illuminance sensor for mainly detecting the visible light, and an infrared sensor for mainly detecting the infrared light. The illuminance value and the tint value are obtained based on the output values of those two sensors.
    Type: Application
    Filed: November 10, 2009
    Publication date: September 2, 2010
    Inventors: Hiroshi AOKI, Akira Kitazume, Daisuke Honda, Naoya Oka, Yuki Nagano, Hiroyuki Kurabayashi, Akihiro Shiraishi, Toshiaki Ohyama
  • Patent number: 7223648
    Abstract: A method for manufacturing a semiconductor element, comprises: (1) forming a first insulating layer for electric field relaxation that is thicker than a first gate insulating layer in a first channel region of a transistor of a first conductive type that is one of P-type and N-type polarity formed on a semiconductor silicon wafer to surround an edge of a first gate electrode in order to reduce an electric field concentrated to a region surrounding the edge of the first gate electrode because of a voltage applied to the first gate electrode and a first drain region of the transistor of the first conductive type, and forming a second insulating layer for electric field relaxation that is thicker than a second gate insulating layer in a second channel region of a transistor of a second conductive type to surround the edge of the first gate electrode in order to reduce an electric field concentrated to a region surrounding an edge of a second gate electrode because of a voltage applied to the second gate electrod
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: May 29, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Masahiro Hayashi, Takahisa Akira, Akihiro Shiraishi
  • Publication number: 20060286733
    Abstract: A method for manufacturing a semiconductor element, comprises: (1) forming a first insulating layer for electric field relaxation that is thicker than a first gate insulating layer in a first channel region of a transistor of a first conductive type that is one of P-type and N-type polarity formed on a semiconductor silicon wafer to surround an edge of a first gate electrode in order to reduce an electric field concentrated to a region surrounding the edge of the first gate electrode because of a voltage applied to the first gate electrode and a first drain region of the transistor of the first conductive type, and forming a second insulating layer for electric field relaxation that is thicker than a second gate insulating layer in a second channel region of a transistor of a second conductive type to surround the edge of the first gate electrode in order to reduce an electric field concentrated to a region surrounding an edge of a second gate electrode because of a voltage applied to the second gate electrod
    Type: Application
    Filed: June 14, 2006
    Publication date: December 21, 2006
    Inventors: Masahiro Hayashi, Takahisa Akiba, Akihiro Shiraishi