Patents by Inventor Hisao YOSHINAGA
Hisao YOSHINAGA 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).
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Patent number: 11575443Abstract: An optical transmission system includes: a first optical transmitting unit for transmitting a first optical signal having a first wavelength; a second optical transmitting unit for transmitting a second optical signal having a second wavelength; an output adjustment unit for acquiring the first optical signal and the second optical signal, adjusting signal intensities of the acquired optical signals, and outputting the optical signals; a multiplexer for multiplexing the first optical signal and the second optical signal that have been subjected to signal intensity adjustment and outputting a multiplexed signal; an amplifier for amplifying the multiplexed signal; a first optical receiving unit for receiving the amplified first optical signal; and a second optical receiving unit for receiving the amplified second optical signal.Type: GrantFiled: January 30, 2020Date of Patent: February 7, 2023Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takashi Mitsui, Toshiaki Shitaba, Akihiro Tanabe, Kengo Horikoshi, Hisao Yoshinaga
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Patent number: 11407910Abstract: There is provided a rubber composition for additive manufacturing that allows a rubber shaped article to be favorably produced using an additive manufacturing apparatus, and allows the obtained rubber shaped article to achieve both high mechanical strength and excellent elongation. The rubber composition for additive manufacturing comprises a liquid rubber, an amine-based urethane acrylate oligomer, and a monomer, wherein a total content of the amine-based urethane acrylate oligomer and the monomer is 30 parts by mass or more, per 100 parts by mass of the liquid rubber.Type: GrantFiled: August 7, 2018Date of Patent: August 9, 2022Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Hisao Yoshinaga, Takuro Akasaka, Nami Masao
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Publication number: 20220140906Abstract: An optical transmission system includes: a first optical transmitting unit for transmitting a first optical signal having a first wavelength; a second optical transmitting unit for transmitting a second optical signal having a second wavelength; an output adjustment unit for acquiring the first optical signal and the second optical signal, adjusting signal intensities of the acquired optical signals, and outputting the optical signals; a multiplexer for multiplexing the first optical signal and the second optical signal that have been subjected to signal intensity adjustment and outputting a multiplexed signal; an amplifier for amplifying the multiplexed signal; a first optical receiving unit for receiving the amplified first optical signal; and a second optical receiving unit for receiving the amplified second optical signal.Type: ApplicationFiled: January 30, 2020Publication date: May 5, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takashi MITSUI, Toshiaki SHITABA, Akihiro TANABE, Kengo HORIKOSHI, Hisao YOSHINAGA
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Patent number: 11237334Abstract: A fiber module (1B) according to the present disclosure includes an input-side optical fiber (11), an output-side optical fiber (12), a ferrule (20) in which the input-side optical fiber and the output-side optical fiber are insertable in both ends and a groove (32) is formed in a direction orthogonal to a longitudinal direction (D1) in the middle of the longitudinal direction, a dielectric multilayer film filter (30) inserted in the groove, and an input-side GI fiber (15) and an output-side GI fiber (16) joined by fusion to respective terminal portions of the input-side optical fiber and the output-side optical fiber. The dielectric multilayer film filter is interposed between an end surface (15f) of the input-side GI fiber and an end surface (16f) of the output-side GI fiber in the longitudinal direction.Type: GrantFiled: February 28, 2019Date of Patent: February 1, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kengo Horikoshi, Takashi Yamada, Hisao Yoshinaga, Shunsuke Kanai, Manabu Kubota
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Patent number: 11021593Abstract: There is provided a rubber composition for additive manufacturing that allows rubber shaped articles to be favorably produced using an additive manufacturing apparatus. The rubber composition for additive manufacturing of the present invention comprises a liquid rubber.Type: GrantFiled: January 11, 2017Date of Patent: June 1, 2021Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Hisao Yoshinaga, Takuro Akasaka, Yoshikazu Masuyama, Nami Masao
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Publication number: 20210041631Abstract: A fiber module (1B) according to the present disclosure includes an input-side optical fiber (11), an output-side optical fiber (12), a ferrule (20) in which the input-side optical fiber and the output-side optical fiber are insertable in both ends and a groove (32) is formed in a direction orthogonal to a longitudinal direction (D1) in the middle of the longitudinal direction, a dielectric multilayer film filter (30) inserted in the groove, and an input-side GI fiber (15) and an output-side GI fiber (16) joined by fusion to respective terminal portions of the input-side optical fiber and the output-side optical fiber. The dielectric multilayer film filter is interposed between an end surface (15f) of the input-side GI fiber and an end surface (16f) of the output-side GI fiber in the longitudinal direction.Type: ApplicationFiled: February 28, 2019Publication date: February 11, 2021Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kengo HORIKOSHI, Takashi YAMADA, Hisao YOSHINAGA, Shunsuke KANAI, Manabu KUBOTA
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Publication number: 20200229538Abstract: A three-dimensional structure according to the present invention is a three-dimensional structure defined by X, Y, and Z directions, including: a body portion in which a plurality of through holes extending in the X direction are disposed in alignment in at least one of the Y and Z directions; and a partition portion that is provided in at least one of the through holes and that partitions the through hole in at least one location in an axial direction of the through hole, wherein the three-dimensional structure is formed by a rubber composition.Type: ApplicationFiled: May 25, 2017Publication date: July 23, 2020Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Hisao YOSHINAGA, Takuro AKASAKA
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Publication number: 20200181433Abstract: There is provided a rubber composition for additive manufacturing that allows a rubber shaped article to be favorably produced using an additive manufacturing apparatus, and allows the obtained rubber shaped article to achieve both high mechanical strength and excellent elongation. The rubber composition for additive manufacturing comprises a liquid rubber, an amine-based urethane acrylate oligomer, and a monomer, wherein a total content of the amine-based urethane acrylate oligomer and the monomer is 30 parts by mass or more, per 100 parts by mass of the liquid rubber.Type: ApplicationFiled: August 7, 2018Publication date: June 11, 2020Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Hisao YOSHINAGA, Takuro AKASAKA, Nami MASAO
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Publication number: 20190010311Abstract: There is provided a rubber composition for additive manufacturing that allows rubber shaped articles to be favorably produced using an additive manufacturing apparatus. The rubber composition for additive manufacturing of the present invention comprises a liquid rubber.Type: ApplicationFiled: January 11, 2017Publication date: January 10, 2019Applicant: SUMITOMO RUBBER INDUSTRIES LTD.Inventors: Hisao YOSHINAGA, Takuro AKASAKA, Yoshikazu MASUYAMA, Nami MASAO
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Patent number: 9448504Abstract: A roller (1) is provided, which is free from imaging failures even if being used as a developing roller, for example, in combination with a toner including highly spherical toner particles or a lower-melting-point toner. The roller (1) includes a tubular body made of a crosslinking product of a rubber composition containing a crosslinkable rubber component, and having a heat conductivity of 0.4 to 2.0 W/m·K and a Type-A durometer hardness of 50 to 70.Type: GrantFiled: January 14, 2016Date of Patent: September 20, 2016Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Hisao Yoshinaga
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Publication number: 20160223937Abstract: A roller (1) is provided, which is free from imaging failures even if being used as a developing roller, for example, in combination with a toner including highly spherical toner particles or a lower-melting-point toner. The roller (1) includes a tubular body made of a crosslinking product of a rubber composition containing a crosslinkable rubber component, and having a heat conductivity of 0.4 W/m·K to 1.0 W/m·K and a Type-A durometer hardness of 50 to 80.Type: ApplicationFiled: January 13, 2016Publication date: August 4, 2016Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Hisao YOSHINAGA
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Publication number: 20160223938Abstract: A roller (1) is provided, which is free from imaging failures even if being used as a developing roller, for example, in combination with a toner including highly spherical toner particles or a lower-melting-point toner. The roller (1) includes a tubular body made of a crosslinking product of a rubber composition containing a crosslinkable rubber component, and having a heat conductivity of 0.4 to 2.0 W/m·K and a Type-A durometer hardness of 50 to 70.Type: ApplicationFiled: January 14, 2016Publication date: August 4, 2016Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Hisao YOSHINAGA
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Patent number: D889788Type: GrantFiled: August 22, 2018Date of Patent: July 14, 2020Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., ASICS CORPORATIONInventors: Hisao Yoshinaga, Takuro Akasaka, Nami Masao, Kenichi Harano