Patents by Inventor Kunihiko Mori

Kunihiko Mori 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: 6671444
    Abstract: An optical fiber, capable of generating by means of nonlinear phenomena, white light in adequately broadened wavelength bands at both sides of a pumping optical pulse that is input, and stabilizing the polarized conditions. The fiber is formed by covering a core with a first cladding, and covering the first cladding with a second cladding, where the second cladding has a refractive index greater than that of the first cladding, but lower than that of the core. Stress-applying parts are provided inside the second cladding so as to sandwich the core from both sides to form a polarization-maintaining optical fiber. The shortest distance between the stress-applying parts is made 2.3 times or more the mode field diameter for the wavelength of the pumping optical pulse.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: December 30, 2003
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Shinichi Arai, Takeshi Yagi, Kunihiko Mori, Hidehiko Takara, Satoki Kawanishi
  • Publication number: 20030086713
    Abstract: A chirp measurement apparatus includes a splitting section for splitting input signal light to two paths; a first dispersion medium with a total dispersion amount of +D (≠0) at a used wavelength, and a second dispersion medium with a total dispersion amount of −D (≠0) at the used wavelength;
    Type: Application
    Filed: October 31, 2002
    Publication date: May 8, 2003
    Inventors: Tetsuro Inui, Kunihiko Mori, Kohichi Robert Tamura
  • Patent number: 6475557
    Abstract: A method for manufacturing an optical filter capable of manufacturing an optical filter in such a manner that the transmission wavelength varies linearly with respect to the angle &thgr; in the rotation direction of the substrate and that almost the entire range of the angle &thgr; is utilizable as the optical filter. A mask capable of being rotated relatively with respect to the substrate coaxially on a plane parallel to the substrate, which is either having an aperture extending along a radius direction with an aperture angle &phgr; or itself extending along a radius direction to cover an angle &phgr;, is provided over the substrate. Then, the mask is relatively rotated with respect to the substrate at least once at a non-constant angular speed during a formation of a single layer or multiple layers on the substrate, while depositing a dielectric material in a single layer or multiple layers on the substrate from the mask side within a deposition chamber.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: November 5, 2002
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kunihiko Mori, Yoshitada Katagiri
  • Patent number: 6452150
    Abstract: Apparatus is provided for on-line monitoring of objects such as cassettes and similar devices used for handling semiconductor wafers to determine whether the objects remain within relevant dimensional tolerances during wafer processing. The apparatus includes a high resolution digital camera for photographing an object to provide digital images to be used to determine whether relevant dimensions of the object are within tolerance limits, and a computer for storing images of the object taken by the camera and for analyzing the images to determine whether relevant dimensions of the object are still within tolerance limits. The camera and computer operate together in accordance with a method further provided by the invention.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: September 17, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Kunihiko Mori, Tadao Sato
  • Patent number: 6437249
    Abstract: A multilayer insulated wire has two or more extrusion-coating insulating layers provided on a conductor directly or via some other layer, or provided on the outside of a multicore wire composed of conductor cores or insulated cores that are collected together, wherein at least one of the insulating layers is made of a mixture prepared by mixing 100 parts by weight of a polyethersulfone resin and 10 to 100 parts by weight of an inorganic filler. A transformer utilizes the multilayer insulated wire. The multilayer insulated wire can realize such high heat resistance as heat resistance F class (155° C.), which satisfies IEC 950 standards, or higher heat resistance, in transformers; and can exhibit excellent electrical properties even at high frequencies. Further, when the transformer is used at high frequencies, the electric properties are not lowered, and influence by the generation of heat can be prevented.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: August 20, 2002
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Atsushi Higashiura, Isamu Kobayashi, Naoyuki Chida, Kunihiko Mori
  • Patent number: 6401554
    Abstract: An inspection apparatus for inspecting the soundness of a substrate transfer robot of a type horizontally transferring a substrate such as a semiconductor wafer mounted on a blade. The inspection apparatus is efficiently used in a multi-chamber type semiconductor manufacturing apparatus and has a noncontact type distance sensor capable of measuring a vertical distance. When the upper face of a cassette stage disposed within a load-lock chamber is assumed to be a reference surface, the distance sensor in the inspection apparatus measures the vertical distance between the horizontal reference surface and the blade of robot moving above the reference surface. From thus measured value, the warp of blade and its shaking upon movement can be detected.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: June 11, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Kunihiko Mori, Taizo Ishikura
  • Publication number: 20010031110
    Abstract: An optical parametric circuit for separating an input signal light and a wavelength-converted light even when the wavelength difference is small is provided. The optical parametric circuit includes: a nonlinear Mach-Zehnder interferometer which includes a first optical path and a second optical path; optical dispersive mediums and second-order optical nonlinear mediums provided in the first and second optical paths; wherein optical dispersive medium and second-order optical nonlinear medium in the first optical path are placed in the reverse order of optical dispersive medium and second-order optical nonlinear medium in the second optical path.
    Type: Application
    Filed: March 20, 2001
    Publication date: October 18, 2001
    Inventors: Wataru Imajuku, Kunihiko Mori, Atsushi Takada
  • Patent number: 6103354
    Abstract: A ceramic circuit substrate includes an insulating layer fabricated of a ceramic, a first surface conductor layer fabricated on a surface of the insulating layer and embedded in the insulating layer except at least its surface, and a second surface conductor layer fabricated to be stacked on the first surface conductor layer.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: August 15, 2000
    Assignee: Sumitomo Metal (SMI) Electronic Devices Inc.
    Inventors: Hideaki Araki, Kunihiko Mori
  • Patent number: 5999548
    Abstract: The present invention relates to a white pulse source that produces spectrally shaped white pulses of a constant optical output power over a wide wavelength range. The white pulse source includes a pump pulse source for generating pump pulses with a center wavelength .lambda.0 and a waveguided nonlinear optical medium with a length L. The waveguided nonlinear optical medium is characterized by two properties: the first property is that chromatic dispersion D(.lambda.0,z) at the center wavelength of pump pulses in ps/nm/km is positive at an input end of said waveguided nonlinear optical medium, where z=0, and decreases towards an output end. The second property is that said chromatic dispersion D(.lambda., z) has a maximum value D(.lambda.p(z), z) at a peak wavelength .lambda.p(z) within a range of propagation distance given by L1.ltoreq.z.ltoreq.L where 0.ltoreq.L1<L, and that said chromatic dispersion D(.lambda., z) has two zero-dispersion wavelengths, .lambda.1(z) and .lambda.2(z), where D(.lambda.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: December 7, 1999
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kunihiko Mori, Hidehiko Takara, Satoki Kawanishi, Masatoshi Saruwatari
  • Patent number: 5960146
    Abstract: High peak pulse light is incident on an optical fiber having a dispersion decreasing region which serves as a main region for generating supercontinuum or idler light and in which the chromatic dispersion does not increase but at least partially decreases in the direction in which light travels. The fiber can be applied to broad band width idler light generation with both light transmission directions. Four wave mixing upon incidence of the light on the dispersion decreasing region of the optical fiber are efficiently obtained.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: September 28, 1999
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Toshiaki Okuno, Masashi Onishi, Masayuki Nishimura, Satoki Kawanishi, Hidehiko Takara, Kunihiko Mori
  • Patent number: 5923683
    Abstract: A coherent white light source generates a uniform and continuous coherent white light spectra over 200 nm at a low pump power. The source is based on a pump light source which produces pump optical pulses at a wavelength .lambda..sub.0 and an optical waveguide to receive a pump optical pulse at .lambda..sub.0 to generate a white pulse having a wavelength spread of .DELTA..lambda.. The optical waveguide is characterized by having dispersion properties such that four-wave mixing light having a wavelength spread of .lambda..sub.0 .+-..DELTA..lambda./2 is produced, and the power gain of the four-wave mixing light is greater than 1. These properties of the waveguide are defined by: the path length of the waveguide device ln G.sub.0 /(2.vertline..gamma..vertline.P) in units of ?km!, an absolute value of the dispersion slope to be not more than 16(.vertline..gamma..vertline.E)(.DELTA..lambda..sup. ln G.sub.0) in units of ?ps/nm.sup.2 /km! and an absolute value of the dispersion at the wavelength .lambda..sub.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: July 13, 1999
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Toshio Morioka, Kunihiko Mori, Masatoshi Saruwatari
  • Patent number: 5604618
    Abstract: The present invention provides an optical parametric circuit for separating four-wave-mixing wave(s) (FWM wave(s)) from signal wave(s) and/or pump waves without using a wavelength filtering device, and optical circuits using the same. The optical parametric circuit of the present invention is made by connecting two output ports of a 2.times.2 optical directional coupler to a nonlinear optical medium via dispersive optical media, each of which has a specific length and a specific propagation constant. By inputting signal waves having carrier angular frequencies .omega..sub.Sj (j=1, 2, . . . N) and pump waves having carrier angular frequencies .omega..sub.P1, .omega..sub.P2 into the first input port of the optical directional coupler, the FWM waves, generated in the nonlinear optical medium, having carrier angular frequencies .omega..sub.fj (=.omega..sub.P1 +.omega..sub.P2 -.omega..sub.S) are output from the second input port of the optical directional coupler.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: February 18, 1997
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kunihiko Mori, Toshio Morioka, Masatoshi Saruwatari