Patents by Inventor Norifumi Yamamoto

Norifumi Yamamoto 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: 11618699
    Abstract: An object is to provide a degrading bacteria-immobilized carrier on which a 1,4-dioxane-degrading bacterium is supported, as well as a biodegradation treatment method for organic compounds, and a biodegradation treatment apparatus, both using this carrier. As a means for achieving the object, a degrading bacteria-immobilized carrier comprising a porous carrier and a 1,4-dioxane-degrading bacterium supported on the porous carrier, as well as a biodegradation treatment method for organic compounds, and a biodegradation treatment apparatus, both using this carrier, are provided.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: April 4, 2023
    Assignees: TAISEI CORPORATION, ORGANO CORPORATION
    Inventors: Norifumi Yamamoto, Jun Kusaka, Atsushi Itagaki, Kazuichi Isaka, Yutaka Tsuda, Masahiro Eguchi
  • Patent number: 11306013
    Abstract: An object is to provide an efficient treatment method for organic compounds using constitutive 1,4-dioxane-degrading bacterium strain N23. As a means for achieving the object, a biodegradation treatment method is provided, wherein organic compounds are biodegradation-treated with strain N23, which is a constitutive 1,4-dioxane-degrading bacterium deposited under Accession No. NITE BP-02032, under a condition of pH 3.0 or higher but no higher than 5.5.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: April 19, 2022
    Assignee: TAISEI CORPORATION
    Inventors: Norifumi Yamamoto, Yuji Saito, Hironori Taki
  • Publication number: 20200354244
    Abstract: An object is to provide a degrading bacteria-immobilized carrier on which a 1,4-dioxane-degrading bacterium is supported, as well as a biodegradation treatment method for organic compounds, and a biodegradation treatment apparatus, both using this carrier. As a means for achieving the object, a degrading bacteria-immobilized carrier comprising a porous carrier and a 1,4-dioxane-degrading bacterium supported on the porous carrier, as well as a biodegradation treatment method for organic compounds, and a biodegradation treatment apparatus, both using this carrier, are provided.
    Type: Application
    Filed: October 15, 2018
    Publication date: November 12, 2020
    Inventors: Norifumi YAMAMOTO, Jun KUSAKA, Atsushi ITAGAKI, Kazuichi ISAKA, Yutaka TSUDA, Masahiro EGUCHI
  • Publication number: 20200180986
    Abstract: An object is to provide an efficient treatment method for organic compounds using constitutive 1,4-dioxane-degrading bacterium strain N23. As a means for achieving the object, a biodegradation treatment method is provided, wherein organic compounds are biodegradation-treated with strain N23, which is a constitutive 1,4-dioxane-degrading bacterium deposited under Accession No. NITE BP-02032, under a condition of pH 3.0 or higher but no higher than 5.5.
    Type: Application
    Filed: June 15, 2018
    Publication date: June 11, 2020
    Inventors: Norifumi YAMAMOTO, Yuji SAITO, Hironori TAKI
  • Patent number: 10364415
    Abstract: To provide an effective 1,4-dioxane-degrading bacteria culture method. Provided is a 1,4-dioxane-degrading bacteria culture method in which 1,4-dioxane-degrading bacteria are propagated using a medium containing diethylene glycol.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: July 30, 2019
    Assignees: TAISEI CORPORATION, OSAKA UNIVERSITY, SCHOOL JURIDICAL PERSON KITASATO INSTITUTE
    Inventors: Norifumi Yamamoto, Yuji Saito, Michihiko Ike, Masashi Kuroda, Kazunari Sei, Daisuke Inoue
  • Patent number: 10329631
    Abstract: An object of the present invention is to provide a constitutive 1,4-dioxane-degrading bacteria offering excellent maximum relative rates of degradation of 1,4-dioxane. As a means for achieving the object, the present invention provides a constitutive 1,4-dioxane-degrading bacteria being strain N23 deposited as Accession No. NITE BP-02032.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: June 25, 2019
    Assignee: TAISEI CORPORATION
    Inventors: Norifumi Yamamoto, Yuji Saito, Hironori Taki
  • Publication number: 20180187253
    Abstract: An object of the present invention is to provide a primer that allows for detection and quantification of 1,4-dioxane-degrading bacteria in a quick, highly accurate manner. To achieve the object, a primer set is provided which comprises a primer that contains a base sequence set forth by SEQ ID NO: 1 and a primer that contains a base sequence set forth by SEQ ID NO: 2.
    Type: Application
    Filed: April 11, 2016
    Publication date: July 5, 2018
    Inventors: Norifumi YAMAMOTO, Yuji SAITO, Hironori TAKI, Michihiko IKE, Masashi KURODA, Kazunari SEI, Daisuke INOUE
  • Publication number: 20180135141
    Abstract: An object of the present invention is to provide a constitutive 1,4-dioxane-degrading bacteria offering excellent maximum relative rates of degradation of 1,4-dioxane. As a means for achieving the object, the present invention provides a constitutive 1,4-dioxane-degrading bacteria being strain N23 deposited as Accession No. NITE BP-02032.
    Type: Application
    Filed: April 25, 2016
    Publication date: May 17, 2018
    Inventors: Norifumi YAMAMOTO, Yuji SAITO, Hironori TAKI
  • Publication number: 20170306290
    Abstract: To provide an effective 1,4-dioxane-degrading bacteria culture method. Provided is a 1,4-dioxane-degrading bacteria culture method in which 1,4-dioxane-degrading bacteria are propagated using a medium containing diethylene glycol.
    Type: Application
    Filed: October 7, 2015
    Publication date: October 26, 2017
    Inventors: Norifumi YAMAMOTO, Yuji SAITO, Michihiko IKE, Masashi KURODA, Kazunari SEI, Daisuke INOUE
  • Patent number: 9755439
    Abstract: A battery state control circuit is provided for connection to multiple rechargeable batteries, the multiple batteries being connected in series, for connection to a primary coil connected in series to the multiple batteries, and for connection to multiple secondary coils to which electrical energy stored in the primary coil is transferred, the multiple secondary coils being connected in parallel to the multiple batteries, respectively. The battery state control circuit includes an adjustment unit to adjust the energy amount stored in the primary coil, in accordance with a state of at least one of the multiple batteries.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: September 5, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Norifumi Yamamoto, Akira Nakamura
  • Publication number: 20150236533
    Abstract: A battery state control circuit is provided for connection to multiple rechargeable batteries, the multiple batteries being connected in series, for connection to a primary coil connected in series to the multiple batteries, and for connection to multiple secondary coils to which electrical energy stored in the primary coil is transferred, the multiple secondary coils being connected in parallel to the multiple batteries, respectively. The battery state control circuit includes an adjustment unit to adjust the energy amount stored in the primary coil, in accordance with a state of at least one of the multiple batteries.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 20, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Norifumi Yamamoto, Akira Nakamura
  • Publication number: 20150140374
    Abstract: A battery state control circuit is provided for use in a battery pack including a plurality of battery units connected in series, and a plurality of coils connected in parallel with the plurality of battery units respectively. The battery state control circuit includes one or more switching elements each connected between one of the coils and a corresponding one of the battery units, wherein turning ON and OFF of the switching elements is controlled based on a difference between a voltage at a first junction point where a corresponding one of the switching elements and a corresponding one of the coils are in contact and a voltage at a second junction point where the corresponding one of the switching elements and a corresponding one of the battery units are in contact.
    Type: Application
    Filed: October 24, 2014
    Publication date: May 21, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Norifumi Yamamoto, Akira NAKAMURA
  • Patent number: 8774656
    Abstract: An image position detector includes a light emitting element to emit light to an image on an image carrier, a first light receiving element to receive a specular reflection of light from a surface of the image carrier and output a first light receiving signal, and a second light receiving element to receive a diffuse reflection of light from a surface of the image and output a second light receiving signal. The image position detector is configured to find the end position of the image according to a multiplied value obtained by multiplying values of the first and second light receiving signals by a constant coefficient.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: July 8, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiko Sato, Toshio Yanata, Masafumi Hashiguchi, Masataka Akaishi, Sohichiroh Naka, Norifumi Yamamoto
  • Patent number: 8474810
    Abstract: A reflective photosensor detects a target object. The photosensor includes a transparent circuit board, a light emitter and a light receiver on one surface of the circuit board, including a light emitting element and a light receiving element, respectively, and disposed so that the light emitting element and the light receiving element face the one surface, a concave portion on the other surface of the circuit board, including a first refractive face to oppose the light emitting element and refract light from the light emitting element to the light receiving element and a second refractive face to oppose the light receiving element and refract, to the light receiver, a component of the light refracted by the first refractive face and specularly reflected by the target object.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: July 2, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Norifumi Yamamoto, Masahiko Sato, Toshio Yanata, Masafumi Hashiguchi, Masataka Akaishi, Sohichiroh Naka
  • Publication number: 20130001857
    Abstract: A reflective photosensor detects a target object. The photosensor includes a transparent circuit board, a light emitter and a light receiver on one surface of the circuit board, including a light emitting element and a light receiving element, respectively, and disposed so that the light emitting element and the light receiving element face the one surface, a concave portion on the other surface of the circuit board, including a first refractive face to oppose the light emitting element and refract light from the light emitting element to the light receiving element and a second refractive face to oppose the light receiving element and refract, to the light receiver, a component of the light refracted by the first refractive face and specularly reflected by the target object.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 3, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Norifumi Yamamoto, Masahiko Sato, Toshio Yanata, Masafumi Hashiguchi, Masataka Akaishi, Sohichiroh Naka
  • Publication number: 20120298845
    Abstract: An image position detector includes a light emitting element to emit light to an image on an image carrier, a first light receiving element to receive a specular reflection of light from a surface of the image carrier and output a first light receiving signal, and a second light receiving element to receive a diffuse reflection of light from a surface of the image and output a second light receiving signal. The image position detector is configured to find the end position of the image according to a multiplied value obtained by multiplying values of the first and second light receiving signals by a constant coefficient.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 29, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masahiko Sato, Toshio Yanata, Masafumi Hashiguchi, Masataka Akaishi, Sohichiroh Naka, Norifumi Yamamoto
  • Patent number: 8212529
    Abstract: A charge/discharge protection circuit for protecting a plurality of serially connected secondary batteries from overcharge, overdischarge, and current overflow by detecting overcharge, overdischarge, and current overflow and switching on/off a discharge controlling FET or a charge controlling FET according to the detection results is disclosed including an overcharge protecting circuit configured to prioritize the detection results corresponding to overcharge and switch off the charge controlling FET in a case where a charger is connected to the charge/discharge protection circuit.
    Type: Grant
    Filed: September 1, 2008
    Date of Patent: July 3, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Norifumi Yamamoto
  • Publication number: 20110222892
    Abstract: A density sensor detects a density of a subject according to a variation in received light. The density sensor comprises a base plate, a light emitting element irradiating a subject with light, the light receiving element receiving light reflected by the subject, lead terminals connected at one end with bottoms of the light emitting and receiving elements, respectively, and electrically connected at the other end with the base plate, and a package containing the light emitting and receiving elements and supported by the base plate, wherein at least one of the lead terminals is configured to be inclined from a halfway position so as to reflect light from the light emitting element in a direction away from the bottom of the light receiving element.
    Type: Application
    Filed: March 14, 2011
    Publication date: September 15, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masafumi HASHIGUCHI, Tomohide URAZATO, Norifumi YAMAMOTO, Masahiko SATO, Toshio YANATA, Tetsuya HIRATA
  • Patent number: 7772805
    Abstract: A charge/discharge protection circuit that protects a secondary battery from overcharge, over-discharge, charge over-current, and discharge over-current is disclosed. The charge/discharge protection circuit includes an overcharge detection circuit, an over-discharge detection circuit, a charge over-current detection circuit, a discharge over-current detection circuit, a charge control FET that is turned off when overcharge is detected and when charge over-current is detected, a discharge control FET that is turned off when over-discharge is detected and when discharge over-current is detected, and a charger connection recovery circuit that controls on/off operations of the discharge control FET. When connection with a charger is established at a time over-discharge is detected and the discharge control FET is turned off, the discharge control FET is forcefully turned on after a first predetermined time elapses.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: August 10, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Norifumi Yamamoto, Akihiko Fujiwara
  • Publication number: 20100188044
    Abstract: A charge/discharge protection circuit for protecting a plurality of serially connected secondary batteries from overcharge, overdischarge, and current overflow by detecting overcharge, overdischarge, and current overflow and switching on/off a discharge controlling FET or a charge controlling FET according to the detection results is disclosed including an overcharge protecting circuit configured to prioritize the detection results corresponding to overcharge and switch off the charge controlling FET in a case where a charger is connected to the charge/discharge protection circuit.
    Type: Application
    Filed: September 1, 2008
    Publication date: July 29, 2010
    Inventor: Norifumi Yamamoto