Patents by Inventor Atsushi Hotta

Atsushi Hotta 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: 11253627
    Abstract: An embolic material contains at least one type of polymer and a liposoluble contrast medium. A method for producing an embolic material includes extruding a raw material that is in a molten state into a solvent, and cooling the raw material so as to solidify the raw material. The raw material contains a polymer and a liposoluble contrast medium.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: February 22, 2022
    Assignee: DREAM MEDICAL PARTNERS CORPORATION
    Inventors: Kenta Bito, Terumitsu Hasebe, Atsushi Hotta
  • Publication number: 20210363323
    Abstract: Disclosed is an additive for imparting antimicrobial properties to a resin. The additive comprises a string polymer, at least one terminal of which has a positive charge, wherein the string polymer is a polymer containing structural units derived from a cationic polymerization initiator and a monomer containing a carbon-carbon double bond. By using this additive, it becomes possible to obtain an antibacterial resin molded body which can be prepared simply and inexpensively and which has high stability and safety.
    Type: Application
    Filed: April 25, 2019
    Publication date: November 25, 2021
    Applicant: KIRIN HOLDINGS KABUSHIKI KAISHA
    Inventors: Toshikazu TSUJI, Hideki KOIZUMI, Akiko JITSUHIRO, Yuki KONOEDA, Atsushi HOTTA, Tomoki MAEDA
  • Publication number: 20200054783
    Abstract: An embolic material contains at least one type of polymer and a liposoluble contrast medium. A method for producing an embolic material includes extruding a raw material that is in a molten state into a solvent, and cooling the raw material so as to solidify the raw material. The raw material contains a polymer and a liposoluble contrast medium.
    Type: Application
    Filed: February 15, 2018
    Publication date: February 20, 2020
    Inventors: Kenta BITO, Terumitsu HASEBE, Atsushi HOTTA
  • Patent number: 9530428
    Abstract: An echo cancellation device includes: a full-band echo canceller that generates a pseudo-echo signal; a downsample processor that downsamples a received signal and extracts a low-band component delayed by a delay amount D1; a delay controller that delays the low-band component by a delay amount D2; a delay controller that delays an output signal of the delay controller by a delay amount D3; a low-band echo canceller that generates a pseudo-echo signal delayed by a delay amount D1+D2; and an upsample processor that upsamples the low-band pseudo-echo signal to generate a full-band pseudo-echo signal delayed by the delay amount 2D1+D2. The delay controllers control the delay amounts D2 and D3 such that a tap length LA satisfies a condition of LA?2D1+D2=D2+D3, the tap length LA indicating a response time of the adaptive filter in the full-band echo canceller.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: December 27, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tomoharu Awano, Takashi Sudo, Atsuyoshi Yano, Atsushi Hotta
  • Publication number: 20160327522
    Abstract: Including an invariant interval deciding unit (1) to decide whether operation of a detection target is in an invariant interval; a correction parameter generator (3) to generate, when decided that the operation is in the invariant interval, a correction parameter for correcting an observation signal in a time interval outside the invariant interval from an observation signal obtained from the operation sound in the invariant interval; a feature extracting unit (4) to extract, when decided that the operation is in the time interval outside the invariant interval, a feature value of the operation sound of the detection target in the time interval outside the invariant interval from the observation signal of the detection target in the time interval outside the invariant interval and the correction parameter; and an abnormal sound deciding unit (5) to decide from the feature value extracted whether an abnormal sound occurs in the detection target.
    Type: Application
    Filed: January 29, 2015
    Publication date: November 10, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Nobuaki TANAKA, Atsuyoshi YANO, Jin HIRANO, Atsushi HOTTA
  • Publication number: 20150381822
    Abstract: An echo cancellation device includes: a full-band echo canceller that generates a pseudo-echo signal; a downsample processor that downsamples a received signal and extracts a low-band component delayed by a delay amount D1; a delay controller that delays the low-band component by a delay amount D2; a delay controller that delays an output signal of the delay controller by a delay amount D3; a low-band echo canceller that generates a pseudo-echo signal delayed by a delay amount D1+D2; and an upsample processor that upsamples the low-band pseudo-echo signal to generate a full-band pseudo-echo signal delayed by the delay amount 2D1+D2. The delay controllers control the delay amounts D2 and D3 such that a tap length LA satisfies a condition of LA ?2D1+D2=D2+D3, the tap length LA indicating a response time of the adaptive filter in the full-band echo canceller.
    Type: Application
    Filed: May 14, 2013
    Publication date: December 31, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomoharu AWANO, Takashi SUDO, Atsuyoshi YANO, Atsushi HOTTA
  • Patent number: 8937109
    Abstract: The present invention is a method for producing a composite including a matrix and a dispersed material dispersed in the matrix. The method includes introducing a raw material for dispersed material which constitutes a dispersed material into a fluid including a melt of a raw material for matrix which constitutes a matrix or a solution containing a raw material for matrix by a vapor deposition method, to obtain a composite.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: January 20, 2015
    Assignee: Keio University
    Inventors: Atsushi Hotta, Masaaki Mori
  • Publication number: 20120164352
    Abstract: The present invention is a method for producing a composite including a matrix and a dispersed material dispersed in the matrix. The method includes introducing a raw material for dispersed material which constitutes a dispersed material into a fluid including a melt of a raw material for matrix which constitutes a matrix or a solution containing a raw material for matrix by a vapor deposition method, to obtain a composite.
    Type: Application
    Filed: August 31, 2010
    Publication date: June 28, 2012
    Applicant: KEIO UNIVERSITY
    Inventors: Atsushi Hotta, Masaaki Mori
  • Patent number: 7754832
    Abstract: A method of preparing a polymer having a tapered block copolymer structure. The method comprises polymerizing a first olefin monomer and a different second olefin monomer in the presence of a catalyst supporting living or quasi-living polymerization. In certain embodiments, the catalyst comprises two neutral metal complexes. In preferred embodiments, a tapered block copolymer structure is formed by adding one monomer in a single batch at the start of the polymerization reaction, and adding a second monomer throughout the course of the reaction. The present invention also provides polymers having one or more tapered block copolymer sections, and compositions based on these polymers.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: July 13, 2010
    Assignee: The Regents of the University of California
    Inventors: Guillermo C. Bazan, Steve Diamanti, Edward J. Kramer, Vikram Khanna, Glenn H. Frederickson, Atsushi Hotta
  • Publication number: 20060094827
    Abstract: A method of preparing a polymer having a tapered block copolymer structure. The method comprises polymerizing a first olefin monomer and a different second olefin monomer in the presence of a catalyst supporting living or quasi-living polymerization. In certain embodiments, the catalyst comprises two neutral metal complexes. In preferred embodiments, a tapered block copolymer structure is formed by adding one monomer in a single batch at the start of the polymerization reaction, and adding a second monomer throughout the course of the reaction. The present invention also provides polymers having one or more tapered block copolymer sections, and compositions based on these polymers.
    Type: Application
    Filed: August 19, 2005
    Publication date: May 4, 2006
    Inventors: Guillermo Bazan, Steve Diamanti, Edward Kramer, Vikram Khanna, Glenn Frederickson, Atsushi Hotta
  • Publication number: 20050134710
    Abstract: An imaging system for use with a patrol car includes at least one image pick-up device, a memory device, and a controller. The controller executes instructions to store image information captured by the image pick-up device in the memory device. Various operating modes of the imaging system may be selected based in part upon the operating conditions of the patrol car. Recording and transmitting of the image information may be performed manually or automatically, depending upon the operator of the system and the conditions of the patrol car. Both the interior of the patrol car (i.e., rear seat), and the environment outside of the patrol car (i.e., to the front and rear of the vehicle), may be recorded by the image pick-up systems. Additionally, automatic control such as 360° views upon reaching a desired destination may be performed based upon the configuration of the imaging system.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 23, 2005
    Inventors: Toshiaki Nomura, Hiroyuki Tanaka, Tetsuya Hattori, Atsushi Hotta
  • Publication number: 20030200081
    Abstract: An audio signal decoding and encoding device has a decoding device having a stream separating circuit, a control signal decoding circuit for outputting blocking information, a decoding and dequantizing circuit, a frequency-time converting circuit, and an information multiplexing circuit for multiplexing a time domain signal and the blocking information and an encoding device having an information separating circuit for separating the time domain signal and the blocking information from a multiplex signal, a time-frequency converting circuit, a psycho-acoustic model circuit, a control signal encoding circuit, a quantizing and encoding circuit, a stream multiplexing circuit, and an output control circuit for controlling output timing of an encoded stream on the basis of the blocking information so that the processing delay time within the device becomes fixed.
    Type: Application
    Filed: April 18, 2003
    Publication date: October 23, 2003
    Inventors: Tetsuro Wada, Atsushi Hotta
  • Patent number: 6577252
    Abstract: An audio signal encoding apparatus is provided which is capable of preventing deterioration in the objective characteristics of a signal to be encoded without using parameters from a psychoacoustic model generated based on human auditory characteristics or by replacing such parameters with those by which the signal can be effectively quantized in cases where the width of a frequency band in which frequency component such as a sine wave of the signal concerned exists is narrow. The audio signal encoding apparatus includes a psychoacoustic model section 1, an MDCT processing section 2 and an iterative loop processing section 3. The psychoacoustic model section 1 includes an FFT operation section 11, a block type determination section 12 and an SMR operation section 13. The iterative loop processing section 3 includes an allowable error amount calculation section 31, a bit amount/error amount control section 32, a normalization processing section 33, a quantization section 34 and a Huffman encoding section 35.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: June 10, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Atsushi Hotta
  • Publication number: 20020120442
    Abstract: An audio signal encoding apparatus is provided which is capable of preventing deterioration in the objective characteristics of a signal to be encoded without using parameters from a psychoacoustic model generated based on human auditory characteristics or by replacing such parameters with those by which the signal can be effectively quantized in cases where the width of a frequency band in which frequency component such as a sine wave of the signal concerned exists is narrow. The audio signal encoding apparatus includes a psychoacoustic model section 1, an MDCT processing section 2 and an iterative loop processing section 3. The psychoacoustic model section 1 includes an FFT operation section 11, a block type determination section 12 and an SMR operation section 13. The iterative loop processing section 3 includes an allowable error amount calculation section 31, a bit amount/error amount control section 32, a normalization processing section 33, a quantization section 34 and a Huffman encoding section 35.
    Type: Application
    Filed: January 9, 2002
    Publication date: August 29, 2002
    Inventor: Atsushi Hotta
  • Patent number: 6236797
    Abstract: A light transmitting tube 1, which can significantly reduce the loss of light at a bent portion, comprises a tubular cladding 3 and a solid core 2 made of material having reflection index higher than that of the material for the tubular cladding 3. The cladding 3 has rigidity higher than the core 2. The core 2 and the cladding 3 are not bonded to each other. As the light transmitting tube 1 is bent, an air layer 4 is appears between the core 2 and the cladding 3.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: May 22, 2001
    Assignee: Bridgestone Corporation
    Inventors: Atsushi Hotta, Tatsuo Terahama, Itsuo Tanuma
  • Patent number: 6098756
    Abstract: In each of oil-retaining sheets, an end edge and side edges of a recess are separated from each other. The side edges are formed into tongue portions covered by first anti-wear meshes which prevent loosing of the side edges, and these tongue portions are maintained in sliding contact with their corresponding side walls of a guide portion of a guide rail. The end edge is covered by a second anti-wear mesh which prevents loosing of the end edge, and the second anti-wear mesh is maintained in sliding contact with an end wall of the guide portion. A gap is also formed to maintain the tongue portions and the second anti-wear mesh out of contact with each other.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: August 8, 2000
    Assignees: Hitachi Building Systems Co., Ltd., Nanshin Kiko Co., Ltd.
    Inventors: Nobumichi Shigetomi, Masaki Nakano, Tomoharu Onishi, Tokiji Tamaru, Shigeyuki Sato, Atsushi Hotta
  • Patent number: 5933560
    Abstract: A branched type light transmission system including a plurality of light transmission tubes each comprising a flexible cylindrical cladding and a transparent core filled in the cladding and which has a higher index of refraction than the cladding. The core is made of an elastically deformable solid substance, and the plurality of light transmission tubes are bundled together at the light-incident ends thereof with a binding member and thus applied with an external pressure to deform each light transmission tube in order to minimize the clearance between the light transmission tubes.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: August 3, 1999
    Assignee: Bridgestone Corporation
    Inventors: Minoru Ishiharada, Atsushi Hotta, Itsuo Tanuma
  • Patent number: 5737471
    Abstract: In an optical waveguide tube comprising a tubular cladding filled with a solid core having a higher refractive index than the cladding, a light transmissive window member is disposed in close contact with at least the end face of the core on a light incident side for protecting the core end face from thermal influence and contamination. Means disposed around the cladding and the window member for securing the window member to the cladding may be a tape wrapped around them or a heat shrinkable sleeve or a ferrule. Alternatively, a ferrule surrounding the outer periphery of the cladding at each end is fastened for securing the cladding to the core at each end for preventing the core from projecting out of the cladding. The ferrule may have a collar disposed in abutment with the core end face.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: April 7, 1998
    Assignee: Bridgestone Corporation
    Inventors: Hideo Sugiyama, Masato Sugimachi, Atsushi Hotta, Minoru Ishiharada, Itsuo Tanuma, Torao Hashimoto
  • Patent number: 5684913
    Abstract: The invention relates to an optical waveguide tube comprising a tubular cladding filled with a solid core having a higher refractive index than the cladding. In one form, a resin material having a Tg of up to 50.degree. C. and a modulus of elasticity of up to 10.sup.9 dyne/cm.sup.2 is used as the core. In another form, a copolymer of acrylic acid, methacrylic acid or a lower alcohol ester thereof with a higher alkyl (meth)acrylate is used as the core, preferably in combination with a phosphate, aromatic carboxylate, aliphatic carboxylic acid, aliphatic carboxylate or glycol. In a third form, such an optical waveguide tube is prepared by filling a hollow tubular transparent cladding having opposite open ends with a liquid monomeric charge and causing the monomeric charge to polymerize while pressurizing the exposed surfaces of the monomeric charge inwardly from the opposite open ends along an axial direction of the cladding, thereby forming a core within the cladding.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: November 4, 1997
    Assignee: Bridgestone Corporation
    Inventors: Hideo Sugiyama, Masato Sugimachi, Masato Yoshikawa, Minoru Ishiharada, Itsuo Tanuma, Kazuo Naito, Atsushi Hotta