Patents by Inventor Masakazu Kuwahara

Masakazu Kuwahara 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: 10475939
    Abstract: Provided is a photoelectric conversion element comprising ITiO as a transparent electrode that is formed using an inline-type sputtering method, and utilizing the high transmittance up to the near-infrared ray region and excellent conductivity of ITiO. Using the inline-type sputtering method, a first transparent conductive oxide film 8 comprising indium oxide or tin-containing indium oxide that includes indium oxide as a main component and tin at an atomic ratio Sn/(In+Sn) of 19 atomic % or less is formed on a photoelectric conversion layer 7 side, and a second transparent conductive oxide film 9 comprising a titanium-containing indium oxide that includes indium oxide as a main component, and titanium at an atomic ratio Ti/(In+Ti) of 0.5 atomic % to 3.5 atomic % is laminated on an opposite side of the first transparent conductive film 8 from the photoelectric conversion layer 7.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: November 12, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yoshiyuki Abe, Yasunori Yamanobe, Riichiro Wake, Masakazu Kuwahara
  • Publication number: 20180175224
    Abstract: Provided is a photoelectric conversion element comprising ITiO as a transparent electrode that is formed using an inline-type sputtering method, and utilizing the high transmittance up to the near-infrared ray region and excellent conductivity of ITiO. Using the inline-type sputtering method, a first transparent conductive oxide film 8 comprising indium oxide or tin-containing indium oxide that includes indium oxide as a main component and tin at an atomic ratio Sn/(In+Sn) of 19 atomic % or less is formed on a photoelectric conversion layer 7 side, and a second transparent conductive oxide film 9 comprising a titanium-containing indium oxide that includes indium oxide as a main component, and titanium at an atomic ratio Ti/(In+Ti) of 0.5 atomic % to 3.5 atomic % is laminated on an opposite side of the first transparent conductive film 8 from the photoelectric conversion layer 7.
    Type: Application
    Filed: May 17, 2016
    Publication date: June 21, 2018
    Inventors: Yoshiyuki Abe, Yasunori Yamanobe, Riichiro Wake, Masakazu Kuwahara
  • Patent number: 9099219
    Abstract: An oxide evaporation material according to the present invention includes a sintered body containing indium oxide as a main component thereof and cerium with a Ce/In atomic ratio of 0.001 to 0.110. The L* value in the CIE 1976 color space is 62 to 95. The oxide evaporation material with the L* value of 62 to 95 has an optimal oxygen amount. Accordingly, even when a small amount of an oxygen gas is introduced into a film-formation vacuum chamber, a transparent conducting film having a low resistance and a high transmittance in the visible to near-infrared region is formed by vacuum deposition methods. Since the amount of the oxygen gas introduced is small, the difference in composition between the film and the evaporation material is made small. This reduces the variations in composition and characteristics among films formed in large quantities.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: August 4, 2015
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yoshiyuki Abe, Riichiro Wake, Masakazu Kuwahara, Kentaro Sogabe, Azusa Oshiro, Hisaki Yada
  • Patent number: 9067470
    Abstract: An object of the present invention is to ensure that, during adjustment of a spring load by an adjuster, total fully-stretched lengths of an outer tube and an inner tube remain unchanged and the adjuster is prevented from protruding from an upper surface of a cap. In a hydraulic shock absorber 10, a spring load adjusting device 30 is configured such that an adjuster 31 is provided at an upper end portion of a vehicle body side tube 11, a push rod 33 that is moved up and down by the adjuster 31 is penetrated into a hollow portion of a hollow rod 23, a suspension spring 35 is pressurized by the push rod 33 that protrudes from the hollow portion of the hollow rod 23 to the inside of a wheel side tube 12, and the spring load of the suspension spring 35 can be adjusted by the up-and-down motion of the push rod 33 caused by the adjuster 31.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: June 30, 2015
    Assignee: SHOWA CORPORATION
    Inventors: Masao Shimasaki, Kimitoshi Sato, Yuji Ohuchi, Masakazu Kuwahara, Tatsuya Takahashi, Takatoshi Ohmi, Tadashi Hachisuka, Yosuke Murakami
  • Patent number: 8941002
    Abstract: Provided are an oxide tablet for vapor deposition (oxide evaporation material), and a vapor-deposited thin film and a solar cell formed using the same. The tablet comprises a sintered body which contains indium oxide as a main component and cerium and which is subjected to no surface grinding after sintering, in which CompS/CompA=0.9 to 1.1, where the content of cerium in a surface layer to a depth of 5 ?m from a surface of the sintered body is represented by a Ce/In atomic ratio (CompS), and an average value of the content of cerium in the entire sintered body is represented by a Ce/In atomic ratio (CompA).
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: January 27, 2015
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Yoshiyuki Abe, Riichiro Wake, Masakazu Kuwahara, Kentaro Sogabe, Azusa Oshiro, Hisaki Yada
  • Publication number: 20130327395
    Abstract: An oxide evaporation material according to the present invention includes a sintered body containing indium oxide as a main component thereof and cerium with a Ce/In atomic ratio of 0.001 to 0.110. The L* value in the CIE 1976 color space is 62 to 95. The oxide evaporation material with the L* value of 62 to 95 has an optimal oxygen amount. Accordingly, even when a small amount of an oxygen gas is introduced into a film-formation vacuum chamber, a transparent conducting film having a low resistance and a high transmittance in the visible to near-infrared region is formed by vacuum deposition methods. Since the amount of the oxygen gas introduced is small, the difference in composition between the film and the evaporation material is made small. This reduces the variations in composition and characteristics among films formed in large quantities.
    Type: Application
    Filed: August 15, 2013
    Publication date: December 12, 2013
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yoshiyuki ABE, Riichiro WAKE, Masakazu KUWAHARA, Kentaro SOGABE, Azusa OSHIRO, Hisaki YADA
  • Patent number: 8574464
    Abstract: An oxide evaporation material according to the present invention includes a sintered body containing indium oxide as a main component thereof and cerium with a Ce/In atomic ratio of 0.001 to 0.110. The L* value in the CIE 1976 color space is 62 to 95. The oxide evaporation material with the L* value of 62 to 95 has an optimal oxygen amount. Accordingly, even when a small amount of an oxygen gas is introduced into a film-formation vacuum chamber, a transparent conducting film having a low resistance and a high transmittance in the visible to near-infrared region is formed by vacuum deposition methods. Since the amount of the oxygen gas introduced is small, the difference in composition between the film and the evaporation material is made small. This reduces the variations in composition and characteristics among films formed in large quantities.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: November 5, 2013
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Yoshiyuki Abe, Riichiro Wake, Masakazu Kuwahara, Kentaro Sogabe, Azusa Oshiro, Hisaki Yada
  • Publication number: 20130285300
    Abstract: An object of the present invention is to ensure that, during adjustment of a spring load by an adjuster, total fully-stretched lengths of an outer tube and an inner tube remain unchanged and the adjuster is prevented from protruding from an upper surface of a cap. In a hydraulic shock absorber 10, a spring load adjusting device 30 is configured such that an adjuster 31 is provided at an upper end portion of a vehicle body side tube 11, a push rod 33 that is moved up and down by the adjuster 31 is penetrated into a hollow portion of a hollow rod 23, a suspension spring 35 is pressurized by the push rod 33 that protrudes from the hollow portion of the hollow rod 23 to the inside of a wheel side tube 12, and the spring load of the suspension spring 35 can be adjusted by the up-and-down motion of the push rod 33 caused by the adjuster 31.
    Type: Application
    Filed: February 25, 2013
    Publication date: October 31, 2013
    Applicant: SHOWA CORPORATION
    Inventors: Masao SHIMASAKI, Kimitoshi SATO, Yuji OHUCHI, Masakazu KUWAHARA, Tatsuya TAKAHASHI, Takatoshi OHMI, Tadashi HACHISUKA, Yosuke MURAKAMI
  • Patent number: 8343387
    Abstract: An oxide evaporation material in the present invention comprises a sintered body containing indium oxide as a main component thereof and cerium with the Ce/In atomic ratio of more than 0.110 and equal to or less than 0.538, and has an L* value of 62 to 95 in the CIE 1976 color space. The oxide evaporation material with the L* value of 62 to 95 has an optimal oxygen amount. Accordingly, even when a small amount of oxygen gas is introduced into a film-formation vacuum chamber, a high-refractive-index transparent film having a refractive index of 2.15 to 2.51 at a wavelength of 550 nm, a low resistance, and a high transmittance in the visible to near-infrared region is formed by vacuum deposition methods. Since the introduced oxygen gas amount is small, the difference in composition between the film and the evaporation material is made small.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: January 1, 2013
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Yoshiyuki Abe, Riichiro Wake, Masakazu Kuwahara, Yasuyuki Maeno
  • Publication number: 20120279564
    Abstract: Provided are an oxide tablet for vapor deposition (oxide evaporation material), and a vapor-deposited thin film and a solar cell formed using the same. The tablet comprises a sintered body which contains indium oxide as a main component and cerium and which is subjected to no surface grinding after sintering, in which CompS/CompA=0.9 to 1.1, where the content of cerium in a surface layer to a depth of 5 ?m from a surface of the sintered body is represented by a Ce/In atomic ratio (CompS), and an average value of the content of cerium in the entire sintered body is represented by a Ce/In atomic ratio (CompA).
    Type: Application
    Filed: January 7, 2011
    Publication date: November 8, 2012
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yoshiyuki Abe, Riichiro Wake, Masakazu Kuwahara, Kentaro Sogabe, Azusa Oshiro, Hisaki Yada
  • Publication number: 20110147676
    Abstract: An oxide evaporation material in the present invention comprises a sintered body containing indium oxide as a main component thereof and cerium with the Ce/In atomic ratio of more than 0.110 and equal to or less than 0.538, and has an L* value of 62 to 95 in the CIE 1976 color space. The oxide evaporation material with the L* value of 62 to 95 has an optimal oxygen amount. Accordingly, even when a small amount of oxygen gas is introduced into a film-formation vacuum chamber, a high-refractive-index transparent film having a refractive index of 2.15 to 2.51 at a wavelength of 550 nm, a low resistance, and a high transmittance in the visible to near-infrared region is formed by vacuum deposition methods. Since the introduced oxygen gas amount is small, the difference in composition between the film and the evaporation material is made small.
    Type: Application
    Filed: November 4, 2010
    Publication date: June 23, 2011
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yoshiyuki ABE, Riichiro Wake, Masakazu Kuwahara, Yasuyuki Maeno
  • Publication number: 20110126899
    Abstract: An oxide evaporation material according to the present invention includes a sintered body containing indium oxide as a main component thereof and cerium with a Ce/In atomic ratio of 0.001 to 0.110. The L* value in the CIE 1976 color space is 62 to 95. The oxide evaporation material with the L* value of 62 to 95 has an optimal oxygen amount. Accordingly, even when a small amount of an oxygen gas is introduced into a film-formation vacuum chamber, a transparent conducting film having a low resistance and a high transmittance in the visible to near-infrared region is formed by vacuum deposition methods. Since the amount of the oxygen gas introduced is small, the difference in composition between the film and the evaporation material is made small. This reduces the variations in composition and characteristics among films formed in large quantities.
    Type: Application
    Filed: November 1, 2010
    Publication date: June 2, 2011
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yoshiyuki ABE, Riichiro Wake, Masakazu Kuwahara, Kentaro Sogabe, Azusa Oshiro, Hisaki Yada
  • Patent number: 6155545
    Abstract: The shock absorber includes an oil pressure damper (1), a piston rod (2) and a cushion spring (3), wherein the cushion spring (3) contacts to the piston rod side with an end thereof and another end (6) thereof contacts to a spring receiving face (8) of a spring seat (7). Since the spring seat (7) is integrated with an adjuster (10) by engaging claws (9) with the adjuster (10) and is also integrated with a movable cover (20), the spring seat (7), the adjuster (10) and the movable cover (20) rotate and move to an axial direction as one body.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: December 5, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hirofumi Noro, Osamu Sato, Shigeo Iijima, Terunari Saiki, Mitsuru Minami, Masakazu Kuwahara