Patents by Inventor Masahiko Yoshino

Masahiko Yoshino 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).

  • Publication number: 20240101899
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Application
    Filed: November 30, 2023
    Publication date: March 28, 2024
    Applicants: CITIZEN ELECTRONICS CO., LTD., NICHIA CORPORATION
    Inventors: Byungchul HONG, Naoki SAKO, Naoto KIJIMA, Masahiko YOSHINO, Takashi HASE, Fumiko YOYASU, Kentarou HORIBE
  • Patent number: 11873435
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: January 16, 2024
    Assignees: CITIZEN ELECTRONICS CO., LTD., NICHIA CORPORATION
    Inventors: Byungchul Hong, Naoki Sako, Naoto Kijima, Masahiko Yoshino, Takashi Hase, Fumiko Yoyasu, Kentarou Horibe
  • Publication number: 20230193126
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Application
    Filed: February 22, 2023
    Publication date: June 22, 2023
    Applicants: CITIZEN ELECTRONICS CO., LTD., NICHIA CORPORATION
    Inventors: Byungchul HONG, Naoki SAKO, Naoto KIJIMA, Masahiko YOSHINO, Takashi HASE, Fumiko YOYASU, Kentarou HORIBE
  • Patent number: 11613698
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: March 28, 2023
    Assignees: CITIZEN ELECTRONICS CO., LTD., NICHIA CORPORATION
    Inventors: Byungchul Hong, Naoki Sako, Naoto Kijima, Masahiko Yoshino, Takashi Hase, Fumiko Yoyasu, Kentarou Horibe
  • Publication number: 20210062085
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Applicant: CITIZEN ELECTRONICS CO., LTD.
    Inventors: Byungchul HONG, Naoki SAKO, Naoto KIJIMA, Masahiko YOSHINO, Takashi HASE, Fumiko YOYASU, Kentarou HORIBE
  • Patent number: 10858582
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 1000 C to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: December 8, 2020
    Assignee: CITIZEN ELECTRONICS CO., LTD.
    Inventors: Byungchul Hong, Naoki Sako, Naoto Kijima, Masahiko Yoshino, Takashi Hase, Fumiko Yoyasu, Kentarou Horibe
  • Patent number: 10612633
    Abstract: A screw apparatus with a seal ring is provided which has a reduced number of components and is easy to be assembled. The screw apparatus includes a screw shaft, a nut that includes a through-hole penetrated by the screw shaft and threadedly engages with the screw shaft via a rolling element, seal rings that include holes fitting the shape of a cross-section of the screw shaft, the cross-section being perpendicular to an axis thereof, and prevent the entry of dust into the inside of the nut, and/or prevent the leaking of lubricant in the nut, and a cap attached to the nut, the cap including protrusions fitted into indentations of the seal rings to effect positioning of the seal rings in a circumferential direction, the cap including a step in contact with the seal rings to effect positioning of the seal rings in an axial direction.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: April 7, 2020
    Assignee: THK CO., LTD.
    Inventors: Tetsuhiro Nishide, Masahiko Yoshino, Toshiaki Shinohara
  • Patent number: 10274061
    Abstract: Provided is a ball screw capable of reducing unevenness of load distribution of balls and extending a service life of the ball screw. In the ball screw, one end part 6 of a nut 2 on a flange 2-2 side is closer to an end 9 of a screw shaft 1 on a fixed side than the other end part 7 of the nut 2 on a side opposite the flange 2-2 is, two or more circulation paths 5a to 5c are arranged in an axial direction of the nut 2, and a diameter of a ball 3a in the circulation path 5a closest to the flange 2-2 of the nut 2 is smaller than a diameter of a ball 3c in the circulation path 5c remotest from the flange 2-2 of the nut 2.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: April 30, 2019
    Assignee: THK CO., LTD.
    Inventors: Kenji Fujii, Masahiko Yoshino, Tsutomu Togashi
  • Publication number: 20180328411
    Abstract: The lubricating oil supply device including: a storage body, which has a large number of air gaps thereinside, and is configured to retain the lubricating oil in the air gaps; a casing, which includes an accommodating chamber for the storage body, has an opening facing the raceway shaft and opening the accommodating chamber, and is fixed to the slide member; and a coating body, which is arranged in the opening of the casing to be held in abutment against the raceway shaft, and receives the lubricating oil to be supplied from the storage body, wherein the storage body has a cutout portion corresponding to the opening of the casing, and wherein the coating body has an air gap ratio smaller than an air gap ratio of the storage body and is sandwiched in the cutout portion of the storage body to push outward the cutout portion.
    Type: Application
    Filed: November 30, 2016
    Publication date: November 15, 2018
    Applicant: THK CO., LTD.
    Inventors: Masahiko Yoshino, Yuji Kubota, Yohei Amemiya
  • Publication number: 20180273842
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Application
    Filed: May 3, 2018
    Publication date: September 27, 2018
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Byungchul HONG, Naoki SAKO, Naoto KIJIMA, Masahiko YOSHINO, Takashi HASE, Fumiko YOYASU, Kentarou HORIBE
  • Publication number: 20180195591
    Abstract: A screw apparatus with a seal ring is provided which has a reduced number of components and is easy to be assembled. The screw apparatus includes a screw shaft, a nut that includes a through-hole penetrated by the screw shaft and threadedly engages with the screw shaft via a rolling element, seal rings that include holes fitting the shape of a cross-section of the screw shaft, the cross-section being perpendicular to an axis thereof, and prevent the entry of dust into the inside of the nut, and/or prevent the leaking of lubricant in the nut, and a cap attached to the nut, the cap including protrusions fitted into indentations of the seal rings to effect positioning of the seal rings in a circumferential direction, the cap including a step in contact with the seal rings to effect positioning of the seal rings in an axial direction.
    Type: Application
    Filed: September 27, 2016
    Publication date: July 12, 2018
    Inventors: Tetsuhiro NISHIDE, Masahiko YOSHINO, Toshiaki SHINOHARA
  • Patent number: 10011769
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: July 3, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Byungchul Hong, Naoki Sako, Naoto Kijima, Masahiko Yoshino, Takashi Hase, Fumiko Yoyasu, Kentarou Horibe
  • Publication number: 20170335933
    Abstract: Provided is a ball screw capable of reducing unevenness of load distribution of balls and extending a service life of the ball screw. In the ball screw, one end part 6 of a nut 2 on a flange 2-2 side is closer to an end 9 of a screw shaft 1 on a fixed side than the other end part 7 of the nut 2 on a side opposite the flange 2-2 is, two or more circulation paths 5a to 5c are arranged in an axial direction of the nut 2, and a diameter of a ball 3a in the circulation path 5a closest to the flange 2-2 of the nut 2 is smaller than a diameter of a ball 3c in the circulation path 5c remotest from the flange 2-2 of the nut 2.
    Type: Application
    Filed: December 25, 2015
    Publication date: November 23, 2017
    Applicant: THK CO., LTD.
    Inventors: Kenji FUJII, Masahiko YOSHINO, Tsutomu TOGASHI
  • Patent number: 9725648
    Abstract: A yellow phosphor is provided. The yellow phosphor includes a crystal formed of a compound that is represented by the following formula (1): Ln4?x(EuzM1?z)xSi12?yAlyO3+x+yN18?x?y(0.5?x?3, 0<z<0.3, 0<y?4) (1), wherein Ln includes at least one rare earth element, and M includes at least one selected from calcium (Ca), barium (Ba), strontium (Sr), and magnesium (Mg).
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: August 8, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Takamasa Izawa, Dohoon Kim, Masahiko Yoshino, Takatoshi Seto
  • Publication number: 20170158957
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Application
    Filed: November 21, 2016
    Publication date: June 8, 2017
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Byungchul HONG, Naoki SAKO, Naoto KIJIMA, Masahiko YOSHINO, Takashi HASE, Fumiko YOYASU, Kentarou HORIBE
  • Patent number: 9541238
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: January 10, 2017
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Byungchul Hong, Naoki Sako, Naoto Kijima, Masahiko Yoshino, Takashi Hase, Fumiko Yoyasu, Kentarou Horibe
  • Patent number: 9506544
    Abstract: A ball screw device or linear motion guide device has a seal member preventing dust and dirt from entering into a movable member of a linear motion guide device and seals out fine dust, dirt or like by surely contacting a seal to a shaft member without providing a large margin to the seal. The seal member includes a body portion mounted to the movable member and a lip portion contacting an outer portion of the shaft member, the lip portion has an oblique surface having an axial section inclining with respect to its axial direction, the body portion has an urging member urging the lip portion in a diameter direction of the shaft member and a reinforcing portion reinforcing the body portion. The urging member is located on the reinforcing portion side than the tip end of the lip portion in the axial sectional shape of the lip portion.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: November 29, 2016
    Assignee: THK CO., LTD.
    Inventors: Katsuya Iida, Soshi Miyahara, Hideo Saito, Toshiaki Kadono, Masahiko Yoshino, Tsutomu Togashi, Eri Kameda, Futoshi Nakamura
  • Patent number: 9205870
    Abstract: A vehicle frame member structure has a closed cross-sectional structure including a pair of first wall portions, and a pair of second wall portions connected to the pair of the first wall portions, in which first beads are provided on the pair of first wall portions along a circumferential direction of the closed cross-sectional structure, a second bead is provided on either of the pair of second wall portions along the closed cross-sectional circumferential direction on a line extending from the first bead in the circumferential direction, the first and second beads are connected in two corner portions between the first wall portions and the second wall portion, a recessed embossed portion is provided in a connection portion of the first and second beads in at least one of the corner portions, and the sheet thickness of the embossed portion is larger than that of the first or second wall portion.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: December 8, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Takuya Kuwayama, Shigeru Yonemura, Masahiko Yoshino, Kazuhiko Honda
  • Publication number: 20150175208
    Abstract: A vehicle frame member structure has a closed cross-sectional structure including a pair of first wall portions, and a pair of second wall portions connected to the pair of the first wall portions, in which first beads are provided on the pair of first wall portions along a circumferential direction of the closed cross-sectional structure, a second bead is provided on either of the pair of second wall portions along the closed cross-sectional circumferential direction on a line extending from the first bead in the circumferential direction, the first and second beads are connected in two corner portions between the first wall portions and the second wall portion, a recessed embossed portion is provided in a connection portion of the first and second beads in at least one of the corner portions, and the sheet thickness of the embossed portion is larger than that of the first or second wall portion.
    Type: Application
    Filed: June 3, 2013
    Publication date: June 25, 2015
    Applicant: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Takuya Kuwayama, Shigeru Yonemura, Masahiko Yoshino, Kazuhiko Honda
  • Publication number: 20150159085
    Abstract: A yellow phosphor is provided. The yellow phosphor includes a crystal formed of a compound that is represented by the following formula (1): Ln4?x(EuzM1?z)xSi12?yAlyO3+x+yN18?x?y(0.5?x?3, 0<y?4) (1), wherein Ln includes at least one selected from a Group IIIa element and a rare earth element, and M includes at least one selected from calcium (Ca), barium (Ba), strontium (Sr), and magnesium (Mg).
    Type: Application
    Filed: December 10, 2014
    Publication date: June 11, 2015
    Inventors: Takamasa IZAWA, Dohoon KIM, Masahiko YOSHINO, Takatoshi SETO