Patents by Inventor Takahiro Sahara

Takahiro Sahara 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: 11635329
    Abstract: A transmission type color calibration chart includes a transparent substrate and a color bar group formed on the transparent substrate, wherein the color bar group is constituted by color bars of a plurality of colors containing at least a first color and a second color arranged in a pattern in no particular order, coordinate points of the first color are within a region encompassed by the four points (0.351, 0.649), (0.547, 0.453), (0.380, 0.506) and (0.433, 0.464) on an xy chromaticity diagram, coordinate points of the second color are within a region encompassed by the four points (0.125, 0.489), (0.112, 0.229), (0.270, 0.407) and (0.224, 0.242) on an xy chromaticity diagram, and the transmission spectrum of the first color's color bar and the transmission spectrum of the second color's color bar have peak tops that are respectively separated.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: April 25, 2023
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko Ogino, Yoichi Kajimura, Takahiro Sahara, Kunio Taguchi, Yasushi Sasagawa, Hitoshi Mizuno, Shota Mitani
  • Publication number: 20220244105
    Abstract: A transmission type color calibration chart includes a transparent substrate and a color bar group formed on the transparent substrate, wherein the color bar group is constituted by color bars of a plurality of colors containing at least a first color and a second color arranged in a pattern in no particular order, coordinate points of the first color are within a region encompassed by the four points (0.351, 0.649), (0.547, 0.453), (0.380, 0.506) and (0.433, 0.464) on an xy chromaticity diagram, coordinate points of the second color are within a region encompassed by the four points (0.125, 0.489), (0.112, 0.229), (0.270, 0.407) and (0.224, 0.242) on an xy chromaticity diagram, and the transmission spectrum of the first color's color bar and the transmission spectrum of the second color's color bar have peak tops that are respectively separated.
    Type: Application
    Filed: April 22, 2022
    Publication date: August 4, 2022
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko OGINO, Yoichi KAJIMURA, Takahiro SAHARA, Kunio TAGUCHI, Yasushi SASAGAWA, Hitoshi MIZUNO, Shota MITANI
  • Patent number: 11397110
    Abstract: A color calibration viewer used in color calibration, wherein: the relative intensity at a wavelength of 505 nm is 0.80 or more and 0.95 or less, and the relative intensity at a wavelength of 620 nm is 0.65 or more and 0.80 or less, where 1 designates the optical intensity of a peak top in a first wavelength region at a wavelength of 440 nm or more and 470 nm or less; and the ratio (A/B) of A and B is 1.00 or more and 1.46 or less, where A designates the optical intensity at a wavelength of 505 nm, and B designates the optical intensity at a wavelength of 620 nm.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: July 26, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko Ogino, Keiichi Ganbe, Kazumasa Onuki, Takahiro Sahara, Yoichi Kajimura
  • Patent number: 11371886
    Abstract: A transmission type color calibration chart includes a transparent substrate and a color bar group formed on the transparent substrate, wherein the color bar group is constituted by color bars of a plurality of colors containing at least a first color and a second color arranged in a pattern in no particular order, coordinate points of the first color are within a region encompassed by the four points (0.351, 0.649), (0.547, 0.453), (0.380, 0.506) and (0.433, 0.464) on an xy chromaticity diagram, coordinate points of the second color are within a region encompassed by the four points (0.125, 0.489), (0.112, 0.229), (0.270, 0.407) and (0.224, 0.242) on an xy chromaticity diagram, and the transmission spectrum of the first color's color bar and the transmission spectrum of the second color's color bar have peak tops that are respectively separated.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: June 28, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko Ogino, Yoichi Kajimura, Takahiro Sahara, Kunio Taguchi, Yasushi Sasagawa, Hitoshi Mizuno, Shota Mitani
  • Patent number: 11340115
    Abstract: A transmission type color calibration chart comprises a transparent substrate and a color bar group formed on the transparent substrate, wherein the color bar group is constituted by color bars of a plurality of colors containing at least a first color and a second color arranged in a pattern in no particular order, coordinate points of the first color are within a region encompassed by the four points (0.351, 0.649), (0.547, 0.453), (0.380, 0.506) and (0.433, 0.464) on an xy chromaticity diagram, coordinate points of the second color are within a region encompassed by the four points (0.125, 0.489), (0.112, 0.229), (0.270, 0.407) and (0.224, 0.242) on an xy chromaticity diagram, and the transmission spectrum of the first color's color bar and the transmission spectrum of the second color's color bar have peak tops that are respectively separated.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: May 24, 2022
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko Ogino, Yoichi Kajimura, Takahiro Sahara, Kunio Taguchi, Yasushi Sasagawa, Hitoshi Mizuno, Shota Mitani
  • Publication number: 20210396582
    Abstract: A transmission type color calibration chart includes a transparent substrate and a color bar group formed on the transparent substrate, wherein the color bar group is constituted by color bars of a plurality of colors containing at least a first color and a second color arranged in a pattern in no particular order, coordinate points of the first color are within a region encompassed by the four points (0.351, 0.649), (0.547, 0.453), (0.380, 0.506) and (0.433, 0.464) on an xy chromaticity diagram, coordinate points of the second color are within a region encompassed by the four points (0.125, 0.489), (0.112, 0.229), (0.270, 0.407) and (0.224, 0.242) on an xy chromaticity diagram, and the transmission spectrum of the first color's color bar and the transmission spectrum of the second color's color bar have peak tops that are respectively separated.
    Type: Application
    Filed: September 1, 2021
    Publication date: December 23, 2021
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko OGINO, Yoichi KAJIMURA, Takahiro SAHARA, Kunio TAGUCHI, Yasushi SASAGAWA, Hitoshi MIZUNO, Shota MITANI
  • Publication number: 20200284656
    Abstract: A color calibration viewer used in color calibration, wherein: the relative intensity at a wavelength of 505 nm is 0.80 or more and 0.95 or less, and the relative intensity at a wavelength of 620 nm is 0.65 or more and 0.80 or less, where 1 designates the optical intensity of a peak top in a first wavelength region at a wavelength of 440 nm or more and 470 nm or less; and the ratio (A/B) of A and B is 1.00 or more and 1.46 or less, where A designates the optical intensity at a wavelength of 505 nm, and B designates the optical intensity at a wavelength of 620 nm.
    Type: Application
    Filed: October 18, 2018
    Publication date: September 10, 2020
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko OGINO, Keiichi GANBE, Kazumasa ONUKI, Takahiro SAHARA, Yoichi KAJIMURA
  • Publication number: 20190137340
    Abstract: A transmission type color calibration chart includes a transparent substrate and a color bar group formed on the transparent substrate, wherein the color bar group is constituted by color bars of a plurality of colors containing at least a first color and a second color arranged in a pattern in no particular order, coordinate points of the first color are within a region encompassed by the four points (0.351, 0.649), (0.547, 0.453), (0.380, 0.506) and (0.433, 0.464) on an xy chromaticity diagram, coordinate points of the second color are within a region encompassed by the four points (0.125, 0.489), (0.112, 0.229), (0.270, 0.407) and (0.224, 0.242) on an xy chromaticity diagram, and the transmission spectrum of the first color's color bar and the transmission spectrum of the second color's color bar have peak tops that are respectively separated.
    Type: Application
    Filed: March 30, 2017
    Publication date: May 9, 2019
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko OGINO, Yoichi KAJIMURA, Takahiro SAHARA, Kunio TAGUCHI, Yasushi SASAGAWA, Hitoshi MIZUNO, Shota MITANI
  • Patent number: 10126521
    Abstract: There is provided a leaf spring which can prevent a reduction in the spring strength and can also prevent a reduction in the electrical conductivity when the thickness of the leaf spring is decreased. The leaf spring includes an outer frame portion an inner frame portion 5b, 11b disposed inside the outer frame portion 5a, 11a, and spring portions provided between the inner frame portion and the outer frame portion The leaf spring is made of a Cu-based alloy, and has an electrical conductivity of not less than 8% IACS and a 0.2% proof stress of not less than 900 MPa.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: November 13, 2018
    Assignees: DAI NIPPON PRINTING CO., LTD., ALPS ELECTRIC CO., LTD.
    Inventors: Yoshihiko Ogino, Chikao Ikenaga, Takahiro Sahara, Masahiro Nagata
  • Patent number: 9939037
    Abstract: A leaf spring frame member (50) comprises: a plurality of leaf spring product parts (11A) each of which includes an outer frame part (11a), an inner frame part (11b) and spring parts (11c); and a support frame (51) which is arranged around the leaf spring product parts (11A) and supports the leaf spring product parts (11A). Each of the leaf spring product parts (11A) and the support frame (51) are connected to each other by connection parts (52). A breaking region (53), which is breakable, is formed in the connection part (52). An outer edge (53a) of the breaking region (53) is situated on the inside of an outer edge (11h) of the leaf spring product part (11A).
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: April 10, 2018
    Assignees: DAI NIPPON PRINTING CO., LTD., ALPS ELECTRIC CO., LTD.
    Inventors: Yoshihiko Ogino, Takahiro Sahara, Kyoji Yamamoto, Koji Tomita
  • Publication number: 20160146280
    Abstract: A leaf spring frame member (50) comprises: a plurality of leaf spring product parts (11A) each of which includes an outer frame part (11a), an inner frame part (11b) and spring parts (11c); and a support frame (51) which is arranged around the leaf spring product parts (11A) and supports the leaf spring product parts (11A). Each of the leaf spring product parts (11A) and the support frame (51) are connected to each other by connection parts (52). A breaking region (53), which is breakable, is formed in the connection part (52). An outer edge (53a) of the breaking region (53) is situated on the inside of an outer edge (11h) of the leaf spring product part (11A).
    Type: Application
    Filed: June 12, 2014
    Publication date: May 26, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yoshihiko OGINO, Takahiro SAHARA, Kyoji YAMAMOTO, Koji TOMITA
  • Publication number: 20160077303
    Abstract: There is provided a leaf spring which can prevent a reduction in the spring strength and can also prevent a reduction in the electrical conductivity when the thickness of the leaf spring is decreased. The leaf spring includes an outer frame portion an inner frame portion 5b, 11b disposed inside the outer frame portion 5a, 11a, and spring portions provided between the inner frame portion and the outer frame portion The leaf spring is made of a Cu-based alloy, and has an electrical conductivity of not less than 8% IACS and a 0.2% proof stress of not less than 900 MPa.
    Type: Application
    Filed: April 23, 2014
    Publication date: March 17, 2016
    Inventors: Yoshihiko OGINO, Chikao IKENAGA, Takahiro SAHARA, Masahiro NAGATA
  • Patent number: 8942003
    Abstract: A multilayered printed wiring board includes a plurality of insulating layers; a plurality of wiring layers which are located between the corresponding adjacent insulating layers; and a plurality of interlayer connection conductors for electrically connecting the wiring layers through the insulating layers; wherein a cavity is formed through one or more of the insulating layers so as to insert a first electric/electronic component and an area for embedding a second electric/electronic component is defined for the insulating layers.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: January 27, 2015
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takahiro Sahara, Atsushi Kobayashi, Kiyoshi Takeuchi, Masahiko Igaue
  • Patent number: 8592686
    Abstract: A method for manufacturing a printed circuit board assembled panel by a simple process with an excellent material yield and a high conforming product rate. Unit printed circuit boards previously manufactured are arranged in a frame in a prescribed relationship. Then, the printed circuit boards are fixed to one another, and the printed circuit board and the frame body are fixed to one another.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: November 26, 2013
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Atsushi Kobayashi, Kazuo Umeda, Wataru Gotou, Takahiro Sahara, Susumu Nakazawa, Kiyoshi Takeuchi, Takayuki Terauchi
  • Publication number: 20130220686
    Abstract: A multilayered printed wiring board includes a plurality of insulating layers; a plurality of wiring layers which are located between the corresponding adjacent insulating layers; and a plurality of interlayer connection conductors for electrically connecting the wiring layers through the insulating layers; wherein a cavity is formed through one or more of the insulating layers so as to insert a first electric/electronic component and an area for embedding a second electric/electronic component is defined for the insulating layers.
    Type: Application
    Filed: February 14, 2013
    Publication date: August 29, 2013
    Inventors: Takahiro Sahara, Atsushi Kobayashi, Kiyoshi Takeuchi, Masahiko Igaue
  • Patent number: 8476535
    Abstract: A multilayered printed wiring board includes a flexible wiring board with wiring layers on both main surfaces thereof; a rigid wiring board with wiring layers on both main surfaces thereof and formed opposite to the flexible wiring board under the condition that an area of the main surface of the rigid wiring board is smaller than an area of the main surface of the flexible wiring board; and an electric/electronic component embedded in the rigid wiring board.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: July 2, 2013
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takahiro Sahara, Atsushi Kobayashi, Masahiko Igaue, Kiyoshi Takeuchi
  • Patent number: 8400776
    Abstract: A multilayered printed wiring board includes a plurality of insulating layers; a plurality of wiring layers which are located between the corresponding adjacent insulating layers; and a plurality of interlayer connection conductors for electrically connecting the wiring layers through the insulating layers; wherein a cavity is formed through one or more of the insulating layers so as to insert a first electric/electronic component and an area for embedding a second electric/electronic component is defined for the insulating layers.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: March 19, 2013
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takahiro Sahara, Atsushi Kobayashi, Kiyoshi Takeuchi, Masahiko Igaue
  • Publication number: 20110061903
    Abstract: A multilayered printed wiring board includes a flexible wiring board with wiring layers on both main surfaces thereof; a rigid wiring board with wiring layers on both main surfaces thereof and formed opposite to the flexible wiring board under the condition that an area of the main surface of the rigid wiring board is smaller than an area of the main surface of the flexible wiring board; and an electric/electronic component embedded in the rigid wiring board.
    Type: Application
    Filed: November 9, 2010
    Publication date: March 17, 2011
    Inventors: Takahiro Sahara, Atsushi Kobayashi, Masahiko Igaue, Kiyoshi Takeuchi
  • Publication number: 20090014205
    Abstract: A method for manufacturing a printed circuit board assembled panel by a simple process with an excellent material yield and a high conforming product rate. Unit printed circuit boards previously manufactured are arranged in a frame in a prescribed relationship. Then, the printed circuit boards are fixed to one another, and the printed circuit board and the frame body are fixed to one another.
    Type: Application
    Filed: April 4, 2005
    Publication date: January 15, 2009
    Inventors: Atsushi Kobayashi, Kazuo Umeda, Wataru Gotou, Takahiro Sahara, Susumu Nakazawa, Kiyoshi Takeuchi, Takayuki Terauchi
  • Publication number: 20080047737
    Abstract: A multilayered printed wiring board includes a flexible wiring board with wiring layers on both main surfaces thereof; a rigid wiring board with wiring layers on both main surfaces thereof and formed opposite to the flexible wiring board under the condition that an area of the main surface of the rigid wiring board is smaller than an area of the main surface of the flexible wiring board; and an electric/electronic component embedded in the rigid wiring board.
    Type: Application
    Filed: July 26, 2007
    Publication date: February 28, 2008
    Inventors: Takahiro Sahara, Atsushi Kobayashi, Masahiko Igaue, Kiyoshi Takeuchi