Patents by Inventor Seiko Mitachi

Seiko Mitachi 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: 20180242900
    Abstract: A swallowing movement monitoring sensor which measures swallowing movement of a subject includes an outside shape variation sensor attached to a laryngeal portion of the subject and a microphone attached in an ear of the subject. The outside shape variation sensor includes an optical fiber sheet. The optical fiber sheet detects variation in quantity of transmitted light based on a loss caused by a lateral pressure applied to an optical fiber from the laryngeal portion in association with variation in outside shape of the laryngeal portion involved with swallowing movement. The microphone detects swallowing sound produced in the ear in association with swallowing movement.
    Type: Application
    Filed: August 21, 2015
    Publication date: August 30, 2018
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuhiro KUWA, Toshifumi HOSOYA, Seiko MITACHI, Tomoyuki HAJI
  • Patent number: 9765246
    Abstract: An object of the present invention is to provide an adhesive composition for a high-power optical fiber having a low pull-in amount. The adhesive composition for a high-power optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane cage structure.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: September 19, 2017
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Hirokazu Kageyama, Kazushi Kimura, Seiko Mitachi
  • Patent number: 9725629
    Abstract: An object of the present invention is to provide an adhesive composition for a polarization-maintaining optical fiber exhibiting a high extinction ratio. The adhesive composition for a polarization-maintaining optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane ladder structure.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: August 8, 2017
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Hirokazu Kageyama, Kazushi Kimura, Seiko Mitachi
  • Publication number: 20170073557
    Abstract: An object of the present invention is to provide an adhesive composition for a high-power optical fiber having a low pull-in amount. The adhesive composition for a high-power optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane cage structure.
    Type: Application
    Filed: February 19, 2015
    Publication date: March 16, 2017
    Inventors: Hirokazu KAGEYAMA, Kazushi KIMURA, Seiko MITACHI
  • Publication number: 20170009114
    Abstract: An object of the present invention is to provide an adhesive composition for a polarization-maintaining optical fiber exhibiting a high extinction ratio. The adhesive composition for a polarization-maintaining optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane ladder structure.
    Type: Application
    Filed: February 19, 2015
    Publication date: January 12, 2017
    Inventors: Hirokazu KAGEYAMA, Kazushi KIMURA, Seiko MITACHI
  • Patent number: 9420964
    Abstract: A body motion sensor, such as an SAS diagnostic device, with which a subject can be examined in a state close to that in an ordinary living environment and it is possible to clearly discriminate between an apnea state and a hypopnea state by means of a relatively simple analytical method; and an optical fiber sheet suitable for use in the sensor. The body motion sensor, such as an SAS diagnostic device, comprises a light source such as an LED, an optical fiber sheet, and an analysis unit that determines fluctuations in the quantity of light outputted from the optical fiber sheet and detects motions of the body.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: August 23, 2016
    Assignees: Sumitomo Electric Industries, Ltd.
    Inventors: Seiko Mitachi, Toshifumi Hosoya, Kazuhiro Kuwa
  • Patent number: 9186078
    Abstract: An optical fiber sheet 10 includes an optical fiber 11 and a wire 12 that are arranged between a first sheet and a second sheet. The optical fiber 11 is a multi-mode optical fiber having a core of silica glass to which a refractive index adjuster is added, has a numerical aperture equal to or less than 0.30 and a flexural rigidity equal to or less than 0.50 N·mm2, and is bent to be arranged between the first sheet and the second sheet. The wire 12 intersects the optical fiber 11 between the first sheet and the second sheet.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: November 17, 2015
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuyuki Sohma, Kazuhiro Kuwa, Toshifumi Hosoya, Masumi Ito, Seiko Mitachi
  • Publication number: 20140270669
    Abstract: An optical fiber sheet 10 includes an optical fiber 11 and a wire 12 that are arranged between a first sheet and a second sheet. The optical fiber 11 is a multi-mode optical fiber having a core of silica glass to which a refractive index adjuster is added, has a numerical aperture equal to or less than 0.30 and a flexural rigidity equal to or less than 0.50 N·mm2, and is bent to be arranged between the first sheet and the second sheet. The wire 12 intersects the optical fiber 11 between the first sheet and the second sheet.
    Type: Application
    Filed: October 3, 2012
    Publication date: September 18, 2014
    Inventors: Kazuyuki Sohma, Kazuhiro Kuwa, Toshifumi Hosoya, Masumi Ito, Seiko Mitachi
  • Publication number: 20120070112
    Abstract: A body motion sensor, such as an SAS diagnostic device, with which a subject can be examined in a state close to that in an ordinary living environment and it is possible to clearly discriminate between an apnea state and a hypopnea state by means of a relatively simple analytical method; and an optical fiber sheet suitable for use in the sensor. The body motion sensor, such as an SAS diagnostic device, comprises a light source such as an LED, an optical fiber sheet, and an analysis unit that determines fluctuations in the quantity of light outputted from the optical fiber sheet and detects motions of the body.
    Type: Application
    Filed: March 24, 2010
    Publication date: March 22, 2012
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Seiko Mitachi, Toshifumi Hosoya, Kazuhiro Kuwa
  • Patent number: 7968667
    Abstract: To provide adhesive compositions for optical fibers which are curable with moisture and excellent in adhesiveness and resistance to moist heat. An Adhesive composition for optical fibers containing (A) a component having a reactive silicon containing group which contains (e) a compound obtained by reacting (a) an epoxy compound having at least one epoxy group with (b) a silane coupling agent having both a reactive silicon containing group and an epoxy-reactive group, wherein the component (A) has a molecular weight of 1000 or below per reactive silicon containing group; and an adhesive composition for optical fibers containing an alkylsilyl ester and (B) a compound other than the alkylsilyl ester which has at least one reactive silicon containing group.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: June 28, 2011
    Assignees: The Yokohama Rubber Co., Ltd.
    Inventors: Seiko Mitachi, Atsushi Kikkawa, Kazushi Kimura
  • Patent number: 7574893
    Abstract: The present invention provides a biomimetic odor sensor that utilizes neither an oxide semiconductor nor a quartz oscillator, is hardly affected by the atmospheric moisture, simple in structure, inexpensive in production cost, fast in reaction rate, of a wet type, and provided with the condition close to the condition of the nasal mucosa of the human olfactus organ. The sensor 10 according to the present invention includes a mixed material 12 in which ?-carotene and a reducing agent to prevent the oxidation of the ?-carotene are dispersed in a viscous liquid, and a cathode electrode 16 and an anode electrode 18 are disposed so as to be in contact with the mixed material 12.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: August 18, 2009
    Assignees: Katayanagi Institute, Seiko Mitachi
    Inventors: Seiko Mitachi, Toshio Matsunaga
  • Publication number: 20080009562
    Abstract: [Problems] To provide adhesive compositions for optical fibers which are curable with moisture and excellent in adhesiveness and resistance to moist heat. [Means For Solving Problems] An Adhesive composition for optical fibers containing (A) a component having a reactive silicon containing group which contains (e) a compound obtained by reacting (a) an epoxy compound having at least one epoxy group with (b) a silane coupling agent having both a reactive silicon containing group and an epoxy-reactive group, wherein the component (A) has a molecular weight of 1000 or below per reactive silicon containing group; and an adhesive composition for optical fibers containing an alkylsilyl ester and (B) a compound other than the alkylsilyl ester which has at least one reactive silicon containing group.
    Type: Application
    Filed: August 22, 2005
    Publication date: January 10, 2008
    Applicants: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Seiko Mitachi, Atsushi Kikkawa, Kazushi Kimura
  • Publication number: 20070151324
    Abstract: The present invention provides a biomimetic odor sensor that utilizes neither an oxide semiconductor nor a quartz oscillator, is hardly affected by the atmospheric moisture, simple in structure, inexpensive in production cost, fast in reaction rate, of a wet type, and provided with the condition close to the condition of the nasal mucosa of the human olfactus organ. The sensor 10 according to the present invention includes a mixed material 12 in which ?-carotene and a reducing agent to prevent the oxidation of the ?-carotene are dispersed in a viscous liquid, and a cathode electrode 16 and an anode electrode 18 are disposed so as to be in contact with the mixed material 12.
    Type: Application
    Filed: May 24, 2005
    Publication date: July 5, 2007
    Inventors: Seiko Mitachi, Toshio Matsunaga
  • Patent number: 6170995
    Abstract: In order to provide a ferrule for an optical-fiber connector used for good organization of an optical communication network, the ferrule for an optical-fiber connector is made of a crystallized glass having a composition which consists essentially of, by weight percent, 60-70% of SiO2, 16-25% of Al2O3, 1.5-3% of Li2O, 0.5-2.5% of MgO, 1.3-4.5% of TiO2, 0.5-3% of ZrO2, 2-6.5% of TiO2+ZrO2, 1-5.5% of K2O, 0-7% of ZnO, and 0-3% of BaO. The crystallized glass includes 30-70 volume % precipitation of &bgr;-spodumene solid solution or &bgr;-quartz solid solution having an average grain size not greater than 2 &mgr;m. In addition, the crystallized glass has a bend strength of 200 MPa or more and a thermal expansion coefficient of −10˜50×10−7/° C. at a temperature between −50 and 150° C.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: January 9, 2001
    Assignees: Nippon Telegraph and Telephone Corporation, NEC Corporation, Nippon Electric Glass Co., Ltd.
    Inventors: Seiko Mitachi, Ryo Nagase, Yoshiaki Takeuchi, Takashi Tanabe, Akihiko Sakamoto, Hirokazu Takeuchi, Masayuki Ninomiya, Katsumi Inada
  • Patent number: 5940548
    Abstract: A guided-wave circuit with a phase adjusting plate which adjusts optical path length errors, occurring during the manufacture of PLC, by an additional processing performed after the production of the PLC; and a method for producing the guided-wave circuit. A guided-wave circuit with an amplitude adjusting plate which adjusts the amplitude characteristics of light by an additional processing performed after the production of the PLC; and a method for producing the guided-wave circuit. A guided-wave circuit with a birefringence adjusting plate which adjusts the birefringence of light by an additional processing subsequent to the manufacture of the PLC; as well as a method for producing the guided-wave circuit.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: August 17, 1999
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hiroaki Yamada, Yasuyuki Inoue, Kazumasa Takada, Seiko Mitachi, Makoto Abe
  • Patent number: 5841926
    Abstract: Disclosed are optical fibers for optical attenuation comprising a core and a cladding, wherein the cladding comprises two or more parts different from each other in their refractive indices and/or the attenuating dopant existence. By using the optical fibers for optical attenuation of the present invention, an optical attenuator which can effectively reduce the effect of cladding mode upon coupling of optical fibers and is excellent in characteristic stability can be manufactured at a low cost.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: November 24, 1998
    Assignees: Nippon Telegraph and Telephone Corporation, Showa Electric Wire & Cable Co., Ltd.
    Inventors: Yoshiaki Takeuchi, Ryo Nagase, Seiko Mitachi, Yuichi Morishita, Akira Kumagai, Yumi Ariga, Kenichi Muta, Kazunari Sugi, Masashi Saijo
  • Patent number: 5694506
    Abstract: When plug is fitted to adapter, optical fiber is inserted to an alignment hole for the optical fiber. By providing a taper at the entrance thereof, even if the tip of the optical fiber is deviated from the central position, the deviation is absorbed to make it possible for the optical fiber to be inserted smoothly. When two plugs is fitted to adapter, the tip of one optical fiber is confronted with the other one in the alignment hole, and excessive length L.sub.1 -L.sub.2 is pushed into the two optical fiber-bending spaces with a suitable distribution, thus the optical fiber buckles therein. The end face of the optical fiber is subjected to flat surface-polishing, removal of ripples after being cleaved, or chamfer grinding after being cleaved. The buckling portion of the optical fiber is coated with carbon or the like.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: December 2, 1997
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Masaru Kobayashi, Shin'ichi Iwano, Ryo Nagase, Seiko Mitachi, Yoshiaki Takeuchi, Shuichiro Asakawa
  • Patent number: 5278107
    Abstract: Optical parts and optical equipment, including lenses, mirrors and laser media made of athermal glasses having compositions comprising 0-13 mol % CdO, 9-24 mol % CdF.sub.2, 5-10 mol % LiF, 30-34.5 mol % AlF.sub.3 28-33.5 mol % PbF.sub.2, 0-4 mol % KF, 0-6.5 mol % YF.sub.3, and 0-2 mol % LaF.sub.3 and having little or no optical path length change as a function of temperature in the infrared region of 1.mu.m to 5.mu.m.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: January 11, 1994
    Assignee: Corning Incorporated
    Inventors: Paul A. Tick, Seiko Mitachi
  • Patent number: 4969710
    Abstract: An optical fiber transmission path wherein total dispersion of the system is compensated by use of fibers composed of glasses with total dispersion of opposite signs at the operating wavelength for the system. With silica-based fibers, CdF.sub.2 --LiF--AlF.sub.3 --PbF.sub.2 --KF--YF.sub.3 fluoride glass-based fibers may be used for a system with 1.55 .mu.m operating wavelength.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: November 13, 1990
    Assignee: Corning Incorporated
    Inventors: Paul A. Tick, Seiko Mitachi
  • Patent number: 4380588
    Abstract: An infrared ray-transmitting glass composition for optical fibers consisting essentially of 28 mol % to 38 mol % of BaF.sub.2, 2 mol % to 7 mol % of GdF.sub.3 and 58 mol % to 69 mol % of ZrF.sub.4, and optical fibers comprising said glass composition.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: April 19, 1983
    Assignee: Nippon Telegraph & Telephone Public Corporation
    Inventors: Seiko Mitachi, Shuichi Shibata, Terutoshi Kanamori, Toyotaka Manabe, Mitsuho Yasu