Patents by Inventor Kenta Takahashi

Kenta Takahashi 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: 20190184709
    Abstract: A roll unit includes a feeding roller to which a belt-shaped member is wound, and a winding roller to which the belt-shaped member fed from the feeding roll is wound. One of the feeding roller and the winding roller is relatively movable to the other of the feeding roller and the winding roller.
    Type: Application
    Filed: August 17, 2018
    Publication date: June 20, 2019
    Inventors: Daisuke HASEBE, Tatsuroh Watanabe, Yukihiro Asano, Kenta Takahashi
  • Publication number: 20190183322
    Abstract: [Object] To provide a medical image processing device, an image processing method, and a program. [Solution] The medical image processing device includes: an acquisition unit configured to acquire application information indicating an application related to a display; and an image processing unit configured to perform image processing based on the application information to acquire an output image.
    Type: Application
    Filed: July 21, 2017
    Publication date: June 20, 2019
    Inventors: KENTA YAMAGUCHI, YASUAKI TAKAHASHI, KENJI IKEDA, TOMOYUKI HIRAYAMA
  • Patent number: 10287165
    Abstract: Provided is a novel imidic acid compound having a divalent anion useful as a pharmaceutical intermediate, an agrochemical intermediate, an acid catalyst, a battery electrolyte or an antistatic agent. The imidic acid compound is a divalent imidic acid compound represented by the following general formula (1) or (2). [In formulae (1) and (2), R1 to R3 represent a fluorine atom or an organic groups selected from a linear or branched C1-10 alkoxy group, a C2-10 alkenyloxy group, a C2-10 alkynyloxy group, a C3-10 cycloalkoxy group, a C3-10 cycloalkenyloxy group and a C6-10 aryloxy group, and wherein a fluorine atom, an oxygen atom or an unsaturated bond may also be present in the organic group. M1 and M2 represent protons, metal cations or onium cations.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: May 14, 2019
    Assignee: CENTRAL GLASS CO., LTD.
    Inventors: Takayoshi Morinaka, Makoto Kubo, Wataru Kawabata, Kenta Yamamoto, Takashi Mori, Masutaka Shinmen, Hiroki Matsuzaki, Ryosuke Kondo, Mikihiro Takahashi
  • Publication number: 20190122478
    Abstract: A medium processing apparatus is a medium processing apparatus that executes a process for a medium, including: a first operation/display user interface that accepts a first operation pertaining to the process, and displays first information pertaining to a state of the medium processing apparatus; and a second operation/display user interface that accepts a second operation pertaining to the process, and displays second information pertaining to a state of the medium processing apparatus.
    Type: Application
    Filed: October 24, 2018
    Publication date: April 25, 2019
    Inventors: Aiko SANDA, Takayuki KURODA, Kenta TAKAHASHI
  • Publication number: 20190042716
    Abstract: This biometric signature system comprises: a biometric certificate storage module that stores a biometric certificate generated on the basis of a user's biometric information; a biometric information acquisition module that acquires new biometric information from the user; a biometric certificate generation module that generates a new biometric certificate on the basis of the new biometric information; a biometric signature generation module that assigns a biometric signature to the new biometric certificate on the basis of the new biometric information; a biometric signature verification module that verifies the biometric signature using the biometric certificate stored in the biometric certificate storage module; and a biometric certificate registration module that registers the new biometric certificate in the biometric certificate storage module if verification of the biometric signature was successful.
    Type: Application
    Filed: June 23, 2016
    Publication date: February 7, 2019
    Inventors: Yosuke KAGA, Masakazu FUJIO, Kenta TAKAHASHI
  • Publication number: 20180241558
    Abstract: A biometric authentication system has a terminal which extracts and encodes feature data for authentication from acquired biometric information, and which transmits the encoded feature data for authentication. The system has a DB for storing encrypted authentication information, a search unit which searches for encrypted authentication information included in the DB, and a decryption unit which decrypts the encrypted authentication information searched for using encoded feature data for authentication as a decryption key. Accordingly, a user is uniquely identified using the obtained authentication information. Further, a processing unit performs authentication response processing with respect to the identified user, based on authentication information obtained by decryption.
    Type: Application
    Filed: March 21, 2017
    Publication date: August 23, 2018
    Inventor: Kenta TAKAHASHI
  • Patent number: 10057068
    Abstract: A biometric signature system generates a digital signature for electronic documents using biometric information as a secret key. Registration commitment information is generated by performing expansion conversion on a predetermined secret key and embedding the resulting secret key in feature data of biometric information of a user, and a set with a corresponding public key. A pair of one-time secret and public keys is generated for digital signature feature data of the biometric information of the user, and a digital signature for a message is generated using the one-time secret key. A digital signature commitment is generated and a set of the one-time public key and the digital signature is output as the biometric digital signature. The digital signature is verified using the one-time public key. A differential secret key is calculated and a correspondence of the differential secret key, the one-time public key and the public key is verified.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: August 21, 2018
    Assignee: HITACHI, LTD.
    Inventor: Kenta Takahashi
  • Publication number: 20170239156
    Abstract: Provided is a composition for controlling hair shape, which affords a superior feeling of hair touch (softness, smoothness, gathering property, gloss etc.), an effect of suppressing damage to the hair, forming a desired wave shape and the like, and sustaining the shape of the hair. A hair shape control assisting agent containing component (A): a compound represented by the formula (1) wherein each symbol is described in the SPECIFICATION, or a salt thereof.
    Type: Application
    Filed: February 23, 2017
    Publication date: August 24, 2017
    Applicant: AJINOMOTO CO., INC
    Inventors: Shun KOBAYASHI, Kenta TAKAHASHI
  • Publication number: 20170222809
    Abstract: A sequential biometric cryptosystem includes: a registration terminal that extracts a set of feature data from each of multiple pieces of biological information acquired from each user, sequentially selects, out of these, a group of multiple sets of feature data, incrementing the number of combined sets, creates a protection template for each selected group of feature data, and stores the protection template into a storage apparatus. The sequential biometric cryptosystem also includes an authentication terminal that extracts feature data from a combination including one or more pieces of biological information of a specified user, acquired through a sensor on the user, verifies a combination of the extracted feature data against the protection template derived from the biological information having the same specified attribute, and performs, if the verification is successful, specified processing on the user.
    Type: Application
    Filed: May 25, 2015
    Publication date: August 3, 2017
    Applicant: HITACHI, LTD.
    Inventor: Kenta TAKAHASHI
  • Patent number: 9694584
    Abstract: A liquid ejector includes a head having a plurality of nozzles arranged along a first direction of a nozzle surface of the head to eject a droplet from the nozzles, and an ejection detector to detect whether or not a droplet is ejected from the plurality of nozzles of the head by detecting an electrical change generated when the droplet lands onto the ejection detector. The ejection detector includes a droplet landing surface arranged opposed to the nozzle surface, a wiper to wipe the droplet off the droplet landing surface along the first direction, and a cleaner having a contact surface to remove the droplet adhered to the wiper after the wiper wipes the droplet landing surface. The contact surface has a curvature such that side ends of the wiper contacts with the contact surface at first, and then a center part of the wiper contacts the contact surface.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 4, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shingo Masaoka, Shotaro Takeuchi, Masahiko Hisada, Kenta Takahashi
  • Publication number: 20170124338
    Abstract: As a technology for preventing the leaking of confidential information more properly, provided is a work recording apparatus including: a recording control unit configured to record a work situation; a position detection unit configured to detect a position; and a usable function restriction unit configured to specify an applicable predetermined state through use of the position detected by the position detection unit and restrict a part or all of functions of the recording control unit based on the specified applicable predetermined state.
    Type: Application
    Filed: June 13, 2014
    Publication date: May 4, 2017
    Inventors: Kentarou OONISHI, Daisuke KATSUMATA, Tooru SUGIMOTO, Naoto MURAYAMA, Nobuhiro IHORI, Naoto MIYAO, Shinya IGUCHI, Kenta TAKAHASHI, Takayuki FUJIWARA, Hiroaki TAKATSUKI
  • Patent number: 9565023
    Abstract: A signature generation and verification system including a signature generation apparatus and a signature verification apparatus is provided. Based on signer certification information possessed by a signer, the signature generation apparatus generates a digital signature and verification data corresponding to a given electronic document and outputs the set of the digital signature and the verification data as signature data. Upon receipt of the electronic document and the signature data, the signature verification apparatus verifies the digital signature using the verification data to verify the integrity of the electronic document. As needed, the signature verification apparatus performs user identification ex-post facto by authenticating that the signer certification information from which the verification data was generated belongs to a legitimate user without knowledge of the signer certification information.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: February 7, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Kenta Takahashi, Masakatsu Nishigaki, Yuta Yoneyama, Eisei Honbu
  • Patent number: 9555331
    Abstract: An obtaining unit of a moving control device obtains a first contact position and a second contact position on a touch panel. A determination unit determines information about a trajectory of a moving object in a virtual space based on the first contact position and second contact position. A moving control unit moves the moving object in the virtual space based on the information.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: January 31, 2017
    Assignee: KONAMI DIGITAL ENTERTAINMENT CO., LTD.
    Inventors: Kuka Lee, Kenta Takahashi, Kentaro Nagayama
  • Publication number: 20160325550
    Abstract: A liquid ejector includes a head having a plurality of nozzles arranged along a first direction of a nozzle surface of the head to eject a droplet from the nozzles, and an ejection detector to detect whether or not a droplet is ejected from the plurality of nozzles of the head by detecting an electrical change generated when the droplet lands onto the ejection detector. The ejection detector includes a droplet landing surface arranged opposed to the nozzle surface, a wiper to wipe the droplet off the droplet landing surface along the first direction, and a cleaner having a contact surface to remove the droplet adhered to the wiper after the wiper wipes the droplet landing surface. The contact surface has a curvature such that side ends of the wiper contacts with the contact surface at first, and then a center part of the wiper contacts the contact surface.
    Type: Application
    Filed: July 22, 2016
    Publication date: November 10, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Shingo Masaoka, Shotaro Takeuchi, Masahiko Hisada, Kenta Takahashi
  • Patent number: 9341598
    Abstract: An ultrasonic testing apparatus includes an array probe 3 disposed to face a flange-side rim face 16 of a wheel 1. The ultrasonic testing apparatus also includes an array flaw detector having a function of transmitting transmission-reception control signals to the array probe, and a personal computer having a function of setting various parameters for the array flaw detector, and receiving signals from the array flaw detector so as to generate images such as an A-scope image and a B-scope image. When detecting a flaw, the array probe is disposed in such a manner that a transducer face thereof faces the flange-side rim face. At this time, an angle between the transducer alignment direction of the array probe and the radial direction of the wheel 1 is set to be 20 to 60° when viewed in the axial direction, and the flaw detection is carried out at this angle.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: May 17, 2016
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hitoshi Murakoshi, Kenta Takahashi
  • Publication number: 20160094348
    Abstract: A biometric signature system generates a digital signature for electronic documents using biometric information as a secret key. Registration commitment information is generated by performing expansion conversion on a predetermined secret key and embedding the resulting secret key in feature data of biometric information of a user, and a set with a corresponding public key. A pair of one-time secret and public keys is generated for digital signature feature data of the biometric information of the user, and a digital signature for a message is generated using the one-time secret key. A digital signature commitment is generated and a set of the one-time public key and the digital signature is output as the biometric digital signature. The digital signature is verified using the one-time public key. A differential secret key is calculated and a correspondence of the differential secret key, the one-time public key and the public key is verified.
    Type: Application
    Filed: May 28, 2013
    Publication date: March 31, 2016
    Applicant: HITACHI, LTD.
    Inventor: Kenta TAKAHASHI
  • Publication number: 20160018426
    Abstract: To efficiently prevent a decrease in measurement accuracy caused by a change in a test cartridge and an environmental temperature, provided is an automatic analysis device. The automatic analysis device includes: a constant-temperature reservoir (6) to be heated by a heating source (6a) so as to keep a liquid temperature at least in the reaction cell (11c) of the test cartridge (10) in the test stage (KT) at a constant environmental temperature set previously; constant-temperature reservoir control means (7) including a temperature detector (7a), for controlling a set temperature of the heating source (6a) of the constant-temperature reservoir (6) so that the set temperature of the heating source (6a) is higher when the internal environmental temperature is lower than a previously-determined threshold value than when the internal environmental temperature is equal to or higher than the threshold value, based on the internal environmental temperature detected by the temperature detector (7a).
    Type: Application
    Filed: July 20, 2015
    Publication date: January 21, 2016
    Applicant: SAKAE CO., LTD.
    Inventors: Masamichi MORIYA, Yasumasa OGINO, Takafumi OKAWARA, Koichi MATSUMOTO, Shigeo ASAMI, Yuichi SHITARA, Kenta TAKAHASHI
  • Patent number: 9212268
    Abstract: This film provides a polyethylene terephthalate film whereby dimensional variation in various steps can be reduced, particularly when the film is used as a substrate film for a flexible device, and that is suitable as a substrate film having minimal curl and excellent appropriateness for processing. This biaxially oriented polyethylene terephthalate film has a degree of crystallinity (Xc) of 0.35 to 0.50, the intrinsic viscosity (IV) of the resin constituting the film is 0.66-1.0 dl/g, the coefficient of thermal expansion at a temperature of 50-170° C. in each of the machine direction and transverse direction of the film is 0.29 ppm/° C., and the degree of thermal shrinkage at 180° C. in each of the machine direction and transverse direction of the film is 0.5%-1.0%.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: December 15, 2015
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kenta Takahashi, Tetsuya Machida, Takuji Higashioji
  • Patent number: 9106636
    Abstract: At a time of enrollment, a client terminal: generates a feature polynomial from biometric information for enrollment; multiplies the feature polynomial by a prescribed integer; stores a helper polynomial obtained by multiplying an inverse polynomial of a template polynomial, a polynomial having a small norm; and transmits the template polynomial to an authentication server. The authentication server stores the template polynomial in a storage unit. At a time of authentication, the client terminal: generates a feature polynomial from biometric information for authentication; multiplies the helper polynomial by the feature polynomial; adds a random polynomial having a small norm to the authentication polynomial; and transmits the authentication polynomial to the authentication server.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 11, 2015
    Assignee: HITACHI, LTD.
    Inventor: Kenta Takahashi
  • Patent number: 9049192
    Abstract: A biometric authentication method for a computer system, the computer system comprising: a computer; and an authentication server, the biometric authentication method including steps of: extracting a first feature from the captured biometric information; generating a template polynomial for enrollment; extracting a second feature from the captured biometric information; generating a template polynomial for authentication; generating a correlation function for calculating a correlation between the template polynomial for authentication and the enrolled template polynomial; calculating a correlation value between the template polynomial for authentication and the enrolled template polynomial by using the generated correlation function, and determining based on the calculated correlation value whether or not the biometric information at the time of authentication coincides with the biometric information enrolled.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: June 2, 2015
    Assignee: HITACHI, LTD.
    Inventor: Kenta Takahashi